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16 April, 23:21

Use substitution to solve the system

2y - 8 = x

2x + 3y = - 2

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Answers (1)
  1. 17 April, 03:02
    0
    x=2y-8

    We use the substitution of x in the second equation

    2 * (2y-8) + 3y = - 2

    4y-16+3y=-2

    7y-16 = - 2

    7y = - 2 + 16

    7y=14

    y=14Ș7

    y=2

    so x = 2*2 - 8

    x=4-8

    x=-4

    the solution is (x, y) = (-4, 2)
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