Math

Solve for 3x - 2y = 9 and - 4x - 2y = 16

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- 4x - 2y = 16

- 4x - 2y+4x = 16+4x

-2y= 16+4x

-2y/-2= 16/-2+4x/-2

y=-8-2x

3x - 2y = 9

3x - 2(-8-2x) = 9

3x - 2(-8) (-2)(-2x) = 9

3x+16+4x=9

16+7x=9

16+7x-16=9-16

7x=-7

7x/7=-7/7

x=-1

y=-8-2x

y=-8-2(-1)

y=-8+2

y=-6