Math

Solve for both systems 5x + 5y = - 15 and - 4x - 2y = 20

Asked by AnneS2 on 28 Aug 06:26

Last updated by anonymous on 29 Aug 17:41

1 Answers

Log in to answer

Answered by CherieS on 29 Aug 17:41

5x + 5y = - 15

5x-5x + 5y = - 15-5x

5y = - 15-5x

5y/5 = - 15-5x/5

y=-3-x

- 4x - 2y = 20

- 4x - 2(-3-x) = 20

- 4x - 2(-3) (-2)(-x) = 20

-4x+6+2x=20

-2x+6=20

-2x+6-6=20-6

-2x=14

-2x/-2=14/-2

x=-7

y=-3-x

y=-3-(-7)=-3+7=4