Math

Solve 3x + 2y = - 15 and - 3x - 4y = 27

Asked by AnneS2 on 04 Jul 05:05

Last updated by anonymous on 05 Jul 12:25

1 Answers

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Answered by CherieS on 05 Jul 12:25

3x + 2y = - 15

3x + 2y-2y = - 15-2y

3x= - 15-2y

3x/3= - 15/3-2y/3

x=-5-.66y

- 3x - 4y = 27

- 3(-5-.66y) - 4y = 27

- 3(-5) (-3)(-.66y) - 4y = 27

15+2y- 4y = 27

15-2y = 27

15-2y-15 = 27-15

-2y=12

-2y/-2=12/-2

y=-6

x=-5-.66y

x=-5-.66(-6)

x=-5+4

x=-1