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19 November, 13:26

What is the value of the x variable in the solution to the following system of equations?

4x + 2y = 12

x - y = 3

+2
Answers (2)
  1. 19 November, 14:25
    0
    Multiply the bottom equation by 2 and you'll get

    4x + 2y = 12

    2x - 2y = 6

    Then combine the two equations and the y's will cancel out and you'll get

    6x = 18

    Divide by 6.

    x = 3
  2. 19 November, 16:01
    0
    4x+2y = 12

    x + y = 3

    Times the bottom one by - 2

    4x+2y=12

    2x-2y=-6

    Cancel out the 2y and - 2y and add 4x and 2x, 12 and - 6 together

    6x=6

    divide by 6 for x

    x=1

    your answer is 1
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