-9y-9=-7(y+3)

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Solution for -9y-9=-7(y+3) equation: 



-9y-9=-7(y+3)

We move all terms to the left:

-9y-9-(-7(y+3))=0



We calculate terms in parentheses: -(-7(y+3)), so:

-7(y+3)

We multiply parentheses

-7y-21

Back to the equation:

-(-7y-21)



We get rid of parentheses

-9y+7y+21-9=0

We add all the numbers together, and all the variables

-2y+12=0

We move all terms containing y to the left, all other terms to the right

-2y=-12

y=-12/-2

y=+6

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