15=(3y+9)

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



15=(3y+9)

We move all terms to the left:

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



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

(3y+9)

We get rid of parentheses

3y+9

Back to the equation:

-(3y+9)



We get rid of parentheses

-3y-9+15=0

We add all the numbers together, and all the variables

-3y+6=0

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

-3y=-6

y=-6/-3

y=+2

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