9y+15=3(y-9)

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Solution for 9y+15=3(y-9) equation: 



9y+15=3(y-9)

We move all terms to the left:

9y+15-(3(y-9))=0



We calculate terms in parentheses: -(3(y-9)), so:

3(y-9)

We multiply parentheses

3y-27

Back to the equation:

-(3y-27)



We get rid of parentheses

9y-3y+27+15=0

We add all the numbers together, and all the variables

6y+42=0

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

6y=-42

y=-42/6

y=-7

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