7y-7=9(y+1)

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Solution for 7y-7=9(y+1) equation: 



7y-7=9(y+1)

We move all terms to the left:

7y-7-(9(y+1))=0



We calculate terms in parentheses: -(9(y+1)), so:

9(y+1)

We multiply parentheses

9y+9

Back to the equation:

-(9y+9)



We get rid of parentheses

7y-9y-9-7=0

We add all the numbers together, and all the variables

-2y-16=0

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

-2y=16

y=16/-2

y=-8

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