Math

Solve for 5x - y = - 39 and 10x + 4y = - 24

Asked by AnneS2 on 14 Jun 09:50

Last updated by anonymous on 15 Jun 11:21

1 Answers

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Answered by CherieS on 15 Jun 11:21

5x - y = - 39

5x - y +y= - 39+y

5x=-39+y

5x+39=-39+y+39

5x+39=y

10x + 4y = - 24

10x + 4(5x+39) = - 24

10x + 4(5x) (4)(+39) = - 24

10x+20x+156=-24

30x+156=-24

30x+156-156=-24-156

30x=-180

30x/30=-180/30

x=-6

5x+39=y

5(-6)+39=y

(-30)+39=y

9=y