Solve for y
y=-2
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30+8y+7y=0
Add 7y to both sides.
30+15y=0
Combine 8y and 7y to get 15y.
15y=-30
Subtract 30 from both sides. Anything subtracted from zero gives its negation.
y=\frac{-30}{15}
Divide both sides by 15.
y=-2
Divide -30 by 15 to get -2.
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