Math

SOlve 4x - 2y = - 18 and - 2x + 2y = 16

Asked by AnneS2 on 04 Jun 07:31

Last updated by anonymous on 05 Jun 15:16

1 Answers

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Answered by CherieS on 05 Jun 15:16

- 2x + 2y = 16

- 2x + 2y+2x = 16+2x

2y=16+2x

2y/2=16/2+2x/2

y=8+x

4x - 2y = - 18

4x - 2(8+x) = - 18

4x - 2(8) (-2)(+x) = - 18

4x-16-2x=-18

2x-16=-18

2x-16+16=-18+16

2x=-2

2x/2=-2/2

x=-1

y=8+x

y=8+-1

y=7