15-3y=3(y-1)

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Solution for 15-3y=3(y-1) equation: 



15-3y=3(y-1)

We move all terms to the left:

15-3y-(3(y-1))=0



We calculate terms in parentheses: -(3(y-1)), so:

3(y-1)

We multiply parentheses

3y-3

Back to the equation:

-(3y-3)



We get rid of parentheses

-3y-3y+3+15=0

We add all the numbers together, and all the variables

-6y+18=0

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

-6y=-18

y=-18/-6

y=+3

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