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22 December, 02:44

3+y=-x

-5x+2y=8

solve in standard form

+3
Answers (2)
  1. 22 December, 05:49
    0
    Rewrite in standard form

    x+y = - 3

    the second equation is already in standard form.

    now, solve for x

    x = - 3-y

    substitute into the other equation and solve for y

    -5 (-3 - y) + 2y = 8

    15 + 5y + 2y = 8

    15 + 7y = 8

    7y = - 7

    y = - 1

    now substitute into the original equation

    x + - 1 = - 3

    x = - 2

    answer (-2, - 1)
  2. 22 December, 06:42
    0
    First answers x+y = - 3

    5x-2y = - 8
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