Math

Solve for both systems: - 2x + 4y = - 22 and - 2x - 4y = 42

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- 2x + 4y = - 22

- 2x + 4y-4y = - 22 -4y

-2x=- 22 -4y

-2x/-2=- 22 -4y/-2

x=11+2y

- 2x - 4y = 42

- 2(11+2y) - 4y = 42

- 2(11) (-2)(+2y) - 4y = 42

-22-4y-4y=42

-22-8y=42

-22-8y+22=42+22

-8y=64

-8y/-8=64/-8

y=-8

x=11+2y

x=11+2(-8)

x=11-16=-5