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8 October, 23:43

What is the x coordinate of the solution to the system of equations? {3x+2y=3 2x-2y=7

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Answers (2)
  1. 9 October, 00:09
    0
    You're solving for x, so solve one equation for y first.

    3x + 2y = 3

    2x - 2y = 7

    2x - 2y = 7

    2x = 2y + 7

    2x - 7 = 2y

    y = (2x - 7) / 2

    Plug it into the other equation;

    3x + 2 ((2x - 7) / 2) = 3

    3x - 2x - 7 = 3

    x - 7 = 3

    x = 10
  2. 9 October, 00:10
    0
    3x = 10 ... ?
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