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11 February, 10:38

Solve the systems of equations using substitution

-3x+2y=12

x=2y-8

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Answers (2)
  1. 11 February, 11:37
    0
    -3x + 2y = 12

    -3 (2y - 8) + 2y = 12

    -6y + 24 + 2y = 12

    -4y + 24 = 12

    -4y = - 12

    y = 3

    x = 2y - 8

    x = 2 (3) - 8

    x = 6-8

    x = - 2

    Therefore, the coordinates are (-2, 3).
  2. 11 February, 13:44
    0
    y=3 x=-2

    Step-by-step explanation:

    -3 (2y-8) + 2y=12

    -6y+24+2y=12

    -4y+24=12

    -4y=-12

    y=3

    x=2 (3) - 8

    6-8

    x=-2
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