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# \$2.00\$2 to solve one problem... Solve the following system of linear equations.

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Solve the following system of linear equations.

|   2x + 4y = 42

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|   2x + y = 18

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The Correct Answer With Work Shown
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Preview: ... -----> 2x + 4y = 42 (-1)(2x + y = 18) -------------->  -2x - y = -18 ......................... ...

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Preview: ... nswer ...

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Preview: ... Substitute y=8 into second equation to get 2x + 8 = 1 ...

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step by step solution
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Preview: ... y - y = 42 - 18 3y = 24 divide both sides by 3 3y/3 = 24/3 y = 8 put this value in eq ...

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Solving By Substitution
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Preview: ... ute this into the first equation: 2x + 4(18 - 2x) = 42 Expand: 2x + 72 - ...

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Very descriptive, all work done and explained
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Preview: ... uation, subtract the 2x from both sides and you hav ...

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Preview: ... is.. 4y=42-2x and then you want to rid of the 4 by the y .. so what you do is divide both 42 and 2x so this is what it ends up looking like..y= ...

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Solve system of linear equations
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Preview: ... -                2*(-4)+y=18 2x+4y=42              ...

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100% correct solution purchase it
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Preview: ... chase it wi ...

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Preview: ... he solutio ...

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Preview: ... DEAR THE ...

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Preview: ... nswer with ...

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complete solution with detailed explanation of each step
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Preview: ... btract the equations from each other in order to eliminate either x or y. In the example y ...

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Elimination of Systems: ANSWER IN ONE MINUTE
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Preview: ... ts opposites. Either one will do will still end up with the same answer: 2nd: Distribute to be able to cancel one of the variables (make it equal to ...

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Elimination of Systems: ANSWER IN ONE MINUTE
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Preview: ... e it equal to zero) 3rd: Just add modified equation and unmodified equation to solve for one variable 4th: Plug in answer to one of original equatio ...

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Using subtraction
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Preview: ... 24 y=8 Sub. back ...

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The smart way ;)
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Preview: ... 2x + y = 18 (2) ----------- ...

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Correct solution with explanation
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Preview: ... = 42 ----------(1)    2x y = 18 -----------(2) ...

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Solution of 2x+4y=42 2x+y=18
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Preview: ... y value in Eq.(1) or in Eq.(2) From Eq.(2) 2x=18-y=18-8=1 ...

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Solution of the system of linear equation
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Preview: ... -18 3y=24 y = 24/3 y=8 putting the v ...

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Preview: ... t into 2x+4y=42   so now that you have substituted your new equation is 2((18-y)/2)+4y=42 focus on the first part ...

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Simple but good trick
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Preview: ... y = 42 -(2x + y = 18)            3y=24    ...

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Preview: ... (3) into (1) 2x + 4(18 - 2x) = 42 2x + 72 - 8x = 42 -6x + 72 ...

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step wise solns with 100% accuracy
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Preview: ... st equation we get         2x+4y-(2x+y)=42-18         3y =  ...

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Ohh I love math
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The easiest way to work linear equations with solution A+
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Preview: ... implest equation, which is Equation 2. So we will work with that first and find the value of 'y'.   Therefore:  2x y = 18                  y = 18 - 2x    (I took the 2x to the other side of the equation, thus it becomes a minus   Now we wi ...

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Preview: ... Â Â Â  Â Â Â  yÂ Â Â  = Â Â  24 / 3 Â Â Â Â  Â Â Â Â Â Â Â  Â  = Â Â  8 applying y= 8, in equation (1) Â Â Â Â  Â  then, Â Â Â  ...

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100 % Right Answer Including Detailed Step by step Solution.
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Preview: ... 18 ---------------------------- 2 1 - 2 gives ...

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Preview: ... +y=18        (2) (1) ...

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Preview: ... 2) - (2X + Y ...

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Learn the easy method stepwise, solve it yourself!
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Preview: ... I multiply or divide either equation one or two with a number so that atleast part of the two equations look identical? Lets observe the above equations. Can you notice that, if I we multiply the second equation with 2, then we get 2 s  8 t  = 12.  Great! Now, the 2 s  of this equation is the same as the  2 s  in the first equation! First step done! (Note: Multiplying an equation with a number such as 2 means that you multiply each element of the equation with 2. In this case it is 2 into s, 2 into t and 2 into 3. Remember, when you multiply with a positive number such as 2, the signs against each of the elements remain. When you multiply with a negative number such as -2, the signs against each of the elements reverse)  Step 2:  Now with the new equation from the previous step (2 s 8 t=12), and th ...

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Preview: ... equation, 2x+ ...

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very simple problem
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Preview: ... 3y=24 y=24/3 y=8   2x+ ...

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Preview: ... |    2x + 4y = 42           |    2x + y = 18 The first thing you need to do is to subtract ...

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explanation and answer to system of equations problem: 2X=4Y=42, 2X+Y=18
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Preview: ... on: Y=18-2x      substitute the value of Y (18-2x) into the first equation then simplify: ...

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Preview: ... ment ...

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equations solved
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Solve the folowing linear equations, show your workings
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Preview: ...    (C) Now substitute for y in (A) 2x + 4y =42     (A) 2x + 4(8) = 42 2x + ...

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price is small but good resolution
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Preview: ... + 4y = 42                         ...

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The best explanation
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Preview: ... (2x+y)= 42-18. That will canc ...

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Linear Equation Solution
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Preview: ... ;     2x + y = 18 If you set each equation equal to 0, you can subtract like values from each other. 2x + 4y -(42) = 42 - (42), Remember you can add or subtract the same value from each side to obtain a value of zero as the result. So , 2x + 4y -(42) = 42 - (42)      ;   2x + 4y - 42 = 0 And , 2x + y -(1 ...

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My answers are always the longest and the best-explained: Here, 1) Eliminate x, 2) solve for y, 3) solve for x :)
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Preview: ... either add or subtract all of equation 2 from equation 1. In this case, you SUBTRACT EQUATION 2 FROM EQUATION 1, so that the "2x"s will go away:   (2x + 4y = 42) - (2x + y  =  18) =        3y = 24. Step 2: Solve for "y". How do you get "y" by itself from ...

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SIMULTANEOUS EQUATION
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Preview: ... UATION1 2X-2X+4Y-(+Y)=42-18 0+4Y-Y=2 ...

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SIMULTANEOUS EQUATION
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Preview: ... 2 FROM EQUATION1 2X-2X+4Y-(+Y)=42-18 ...

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Preview: ... tions so we get 2x+4y=42 2x+ y=08 -    -     - ------------------ 0 - 3y=3 ...

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Its easy
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Preview: ... y  = 18  ------>Equation 2 we get, 2x - 8 = 18 2x = 18 + 8 2x = 26 x = 26 / 2 x = 13 The value of X and y were 13 and 8 . Hint: To check t ...

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i just need rating no need of money
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Preview: ... 2x+4y=42-------------(1) ...

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SOLUTION OF EQUATION
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Preview: ... ons.         |    2 ...

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Ans with easy explaination
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Preview: ... -- I 2x + y = 18    -- II --- ...

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Preview: ... 4y=42    ...

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Linear Equation
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Preview: ... )        2x + 4y = 42   and     2x + ...

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algebra
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Preview: ... eometry, calculus 1 and 2 and any math under ...

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correct solution with all the possible alternatives to solve the equation.
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Preview: ... ):    2x+y=18 =>2x+8=18 =>2x=10 =>x=5 Therefore,x=5 & y=8 is the required solution of this problem. Note: 1) Logic behind such problems:  Basically in such questions u have to find the value of x in terms of y or vice-versa from  first equation and put it in second e ...

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Solving your System of two Equations with two unknowns
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Preview: ... the equation by negative one (-1) which will change the sign of each term to the opposite sign.  That is   (-1)( 2x + y = 18) which is equal to -2x - y = -18.  We then add the two equations as follows: 2x + 4y = 4 ...

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Solution with step by step explanation. You may msg me for extra help.
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Preview: ... . Step 2.  To do this, we can either add or subtract the functions just like we would do normal numbers. Step 3.  Look at the equations above.  This is easy since we can see that 2x is in both equations.  So we will multipl ...

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Solution In a descriptive manner and with very easy method...!
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Preview: ... Â Â  -6x + 72 = 42 Â Â Â Â Â  6x = 72 â€“ 42 Â Â Â Â Â  6x = 30 Â Â Â Â Â  By applying cross section method we will take 6 to the other hand Â Â Â Â Â  x = 30/6 Â Â Â Â Â  ...

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linear equations
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Preview: ...                eq n2-----2X+ Y=18 Subtracting eq 2 from eq 1, we will ...

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Simplest way
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Preview: ... eck a ...

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Preview: ... x+y)=42-18;  2x+4y-2x-y=24;  ...

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perfect step by step solution
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Solution with The Fastest Method...
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Preview: ... 18 -------------------------        => 0 + 3y = 24        => y = 24/3        ...

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Best solution, the answer is (x,y)=(5,8)
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Preview: ... e second equation and replace the "y" with "8"         2x + y = 18     => 2x + ...

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easiest solution
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Preview: ... y = 18                                    ...

The full tutorial is about 51 words long plus attachments.

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simple solution for this
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• Posted on May. 25, 2010 at 09:34:48AM
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Preview: ... e better ...

The full tutorial is about 7 words long plus attachments.

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here is the work for you,absolutly correct!
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Preview: ... please see the a ...

The full tutorial is about 13 words long plus attachments.

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simple
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Preview: ... = 18 -y ( both equal with 2x) so 42 ...

The full tutorial is about 36 words long .

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easy linear
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Preview: ... --->> -6x = 42 - 72 ---------------------------> -6x = -30 --------------------------> x = -30/ -6 -------------------------------- ...

The full tutorial is about 99 words long .

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solved
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Preview: ...       |    2x + 4y ...

The full tutorial is about 25 words long .

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Another way to do it
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Preview: ... o get rid of a term:           2x + 4y = 42       - ...

The full tutorial is about 55 words long .

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what do do..solve for one or the other
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Preview: ... elf by dividing the complete other side by 2   x=(18-y)/2     now your ready to plug it in     2x+4y=42   plug in for x the answer you ...

The full tutorial is about 85 words long .

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SOLUTION IS STEP WISE GIVEN TO YOU
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Preview: ... 2(21-2Y)+Y=18 42-4Y+Y=18 42-3Y=18 -3Y=18-42 -3Y ...

The full tutorial is about 22 words long .

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GREAT WORK FOR YOU!
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Preview: ... 4y-(2x+y)=42-18 =>3y=24 = ...

The full tutorial is about 6 words long .

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solutions for you
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Preview: ... is very simple a ...

The full tutorial is about 15 words long plus attachments.

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Solve easily
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Preview: ... times x and 4 times of y gives 42, and in ...

The full tutorial is about 49 words long .

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Solve system of linear equations
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Preview: ... (-1)           -2x - y = -18            -2x - y = -18   3y = 24               ...

The full tutorial is about 77 words long .

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Preview: ... nd number them (equation (1) and equation (2) ) 2x+4y=42  (1) 2x+y=18  (2) we can see that both ...

The full tutorial is about 73 words long .

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high solution
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Preview: ... two equation 3y=24 y=24/3 ...

The full tutorial is about 9 words long .

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Preview: ... +y=18          2x+8=18          2 ...

The full tutorial is about 18 words long .

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Step by Step Solution
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Preview: ... => 2x + 4y -2x - y = 24 => ...

The full tutorial is about 32 words long .

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Preview: ... -18= 24 => y=8 ...

The full tutorial is about 15 words long .

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to easy in learn
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Preview: ... = 21 x + 2y= 21 2x + y =18  so 3x + 3y = 39 de ...

The full tutorial is about 68 words long .

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Simultanous equation solved
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Preview: ... equations Let 2x+4y=42 be eq 1 and 2x+y=18 be eq 2 ...

The full tutorial is about 39 words long .

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Solution of Problem
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Preview: ... 8   (2) Subtracting (2) from (1) we get ...

The full tutorial is about 48 words long .

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Solution to the linear equation
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Preview: ... 2x+ y=18 ...........Equation no (2) Subtract equation (2) from equation (1) which gi ...

The full tutorial is about 65 words long .

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Preview: ... -------             3y = 24; => y=24/3; y=8 We got y, so we substitu ...

The full tutorial is about 62 words long .

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Here are the two Linear Equations you needed! A++
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Preview: ... Thanks and let me know if ...

The full tutorial is about 22 words long plus attachments.

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Problem
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Preview: ... u l ...

The full tutorial is about 5 words long plus attachments.

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Resolved by substitution, step by step. preview please:)
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Preview: ... e substitution method is the simplest to solve this system: Method: Replacement First, from Equation 2, solve for the and stay ...

The full tutorial is about 133 words long .

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simple yet ......
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Preview: ... most any linear equation in two variables first : analyse the equations -  2x + 4y = 32 ;assign coefficients as  x 1=2, y 1=4, c 1=42 similarly for second equation x 2=2, y 2=1, c 2=18 second : try to equat ...

The full tutorial is about 176 words long .

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simple and best solution
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Preview: ... =42.......1 2x+y=18...... ...

The full tutorial is about 6 words long .

\$2.00
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Preview: ... 2(21-2y)+y=18 42-4y+y=18 ...

The full tutorial is about 9 words long .

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Preview: ... 2x+y=18   + _ ...

The full tutorial is about 4 words long .

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Working
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Preview: ... 18-y 3y=24 y=8 ...

The full tutorial is about 3 words long .

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Preview: ... es. so   2x+4y=42 - (2x+y= ...

The full tutorial is about 13 words long .

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solved
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Preview: ... s x=5 ...

The full tutorial is about 7 words long .

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Linear Equations
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Preview: ... vide both sides by 3:                                Now, you can plug this value into one of the original equations in order to solve for x:                                     ...

The full tutorial is about 74 words long .

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These are known as SIMULTANIOUS EQUATIONS
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Preview: ... nown value equal. But IN this case X values are equal (2x and 2x) Then since the co-e ...

The full tutorial is about 101 words long .

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Solving X and Y
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Preview: ...                y    =  8   so then you can work out x...       2x  +   y  =  18      add the v ...

The full tutorial is about 87 words long .

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two "2 line methods" of solving the tutorial
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Preview: ... ations and get x Method 2: Put either one of the variables in the eq ...

The full tutorial is about 75 words long .

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maths
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Preview: ... th problm ...

The full tutorial is about 11 words long plus attachments.

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Attached is a solution to your problem and a full step by step solution how it the answer was derived.
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Preview: ... ow solve for y using eqn 4 by dividing the whole equation by 3. (3y = 24) / 3 y = 8 -->Â  value of y Â  4.Â Â Â Â  Now substitute y on either eqn 1 ...

The full tutorial is about 162 words long .
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system of linear equations
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Preview: ...   x = 21 - 2y   2x + y = 18 2( ...

The full tutorial is about 56 words long .

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The Solution Includes A Secret ;)
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Preview: ... - 2*x y = 18 - 2*5 y=8   To easily solve this proble ...

The full tutorial is about 47 words long .

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How to solve a linear equations.
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Preview: ... Â Â Â Â Â Â  3y = 24 Â Â Â Â Â Â  3y/3 = 24/3 Â Â ...

The full tutorial is about 45 words long .

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Solve the Linear Equation
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Preview: ... 42 Working: x 4y= 42 Equation #2: 2 x y= 18 Working: x y= 18 ...

The full tutorial is about 65 words long .

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Solve the following system of linear equations."
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Preview: ... le (a) 2x + 4 (y=8) = 42 or 2x + 4(8) = 42 2x + 32 = 42 2x + 32 -32 = 42-32 2x = 10 (2/2)x = (10/2) ...

The full tutorial is about 106 words long .

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Short solution!
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Preview: ... 2x+y=18 (2) (1) - ...

The full tutorial is about 21 words long .

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step wise method to solve this problem and also general step wise algorithm to solve other similar problems
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Preview: ... 1st equation 2x 4y=42 2x=42-4y x =(42-4y)/2 step2 :put this value of variable (in our example x) i ...

The full tutorial is about 65 words long .

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system of equations
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Preview: ... 4y= 42 ...

The full tutorial is about 4 words long .

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Preview: ... ----(equation 3) -2x - y = -18 ------(equation 4)       3y = ...

The full tutorial is about 64 words long .

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linear equation
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Preview: ... ation (1)-(2); 2x+4y=42 - 2x+y=18 = 3y= ...

The full tutorial is about 21 words long .

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Method to solve system of linear equations
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Preview: ... y=18-2x           2x is taken to the Right Hand Side(RHS).a negative sign is given during the process.thus             RHS is (18-2x)  Step 2:second equation is 2x+4y=42           we fo ...

The full tutorial is about 164 words long .

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this is the detail solution
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Preview: ... 2-3y - 42 =18-42 => -3y =-24 =>  3y=24 =>  3y/3=24/3 => ...

The full tutorial is about 57 words long .

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3 full step by step complete vays to get to the answer.
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Preview: ... on and it consists of finding the value of the first variable and substitute it in the second equation: 2x+4y=42 2x=42-4y x=(42-4y)/2 x=21-2y   Now, we substitute x into the equation: 2x+y=18 2(21-2y)+y=18 42-4y+y=18 42-3y=18 42-42-3y=18-42 -3y=-24 y=-24/-3 ...

The full tutorial is about 154 words long plus attachments.

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Algebra Problem Solution
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Preview: ... by itself.... y=18-2x Since we have what Y equals in each, set them equal to each other....   10.5-.5x=18-2x  add 2x to both sides, ...

The full tutorial is about 96 words long .

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subtracting equation (ii) from (i), dividind both sides by three, using equation (a) in equation (ii), subtracting 8 fro
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Preview: ... ides by three => y = 8.........(a) using equation (a) in equation (ii) => ...

The full tutorial is about 53 words long .

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| 2x + 4y = 42 < | 2x + y = 18
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Preview: ... y = ...

The full tutorial is about 185 words long .

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Preview: ... so it will become y=21/2-1/2x..this is your first equation then substitute the first equation  to 2x+y-18 so it will become 2x+(21/ ...

The full tutorial is about 104 words long .

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Preview: ... oth equations.Â  = 3y = 24 Y= 8 Then put the value of Y in to eq. (2) to find the value of X 2x + 8 = 18 2x = 18 â€“ 8 X = 10/2 X = 5 2x + 4y = ...

The full tutorial is about 154 words long plus attachments.

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(0K)

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subtract equation2 from equation1
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Preview: ... , then in equation2  replace y w ...

The full tutorial is about 27 words long plus attachments.

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The solution
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Preview: ... o y = 8.  Then replace y in the second eq ...

The full tutorial is about 45 words long .

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Preview: ... 4y =42 -2x -y =-18 _____________ 0x+3y = 24 hence, ...

The full tutorial is about 44 words long .

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Complete solution(best help)
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Preview: ... r :-   2x + 4y = 42 .............eq(1)                 2x + y = 18 .........eq(2)            ...

The full tutorial is about 51 words long .

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RLBL Solution
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Preview: ...   |  2x + y = 18 2x + 4y = 42  |  y = 18 - 2x Substitute 18 - 2x for y for the equation on the left 2x + 4(18 - 2x) = 42  Simplify 2x + 72 - 8x = 42 Add ...

The full tutorial is about 184 words long .

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Preview: ... ) 2x +Â  y = 18Â Â Â Â Â Â Â  equation ( II ) Now subtracting equation ( II ) from ( I ) 2x ...

The full tutorial is about 78 words long .

\$1.50
THE BEST ASNWER
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Preview: ... 8 on y , because in the first step we have find the value of y = 8 2x + y Â = 18 2x + 8 Â = 18 Â Â Â Â Â Â Â Â Â Â Â  2x Â Â  = Â  18 â€“ 8 Â  ...

The full tutorial is about 111 words long plus attachments.

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Solution for x and y
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