Math

Solve for 4x - 4y = 16 and - 4x + 3y = - 18

Asked by AnneS2 on 14 Jun 09:49

Last updated by anonymous on 15 Jun 11:40

1 Answers

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Answered by CherieS on 15 Jun 11:40

4x - 4y = 16

4x - 4y+4y = 16+4y

4x= 16+4y

4x/4= 16/4+4y/4

x=4+y

- 4x + 3y = - 18

- 4(4+y) + 3y = - 18

- 4(4) (-4)(+y) + 3y = - 18

-16-4y+ 3y = - 18

-16-y = - 18

-16-y+16 = - 18+16

-y=-2

-y/-1=-2/-1

y=2

x=4+y

x=4+2

x=6