7y-15=9(y-1)

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Solution for 7y-15=9(y-1) equation: 



7y-15=9(y-1)

We move all terms to the left:

7y-15-(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+9-15=0

We add all the numbers together, and all the variables

-2y-6=0

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

-2y=6

y=6/-2

y=-3

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