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15 August, 04:04

Solve system by elimination

8x-8y=-16

-8x-7y=-29

+3
Answers (1)
  1. 15 August, 07:42
    0
    Add these together.

    You get - 15y=-45

    So y=3

    Now plug in to first equation.

    8x-8 (3) = -16

    8x-24=-16

    8x=8 so x=1

    Check both values in second equation.

    -8 (1) - 7 (3) =

    -8-21=-29

    It works ... so x=1, y=3
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