15=-3(y-4)

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Solution for 15=-3(y-4) equation: 



15=-3(y-4)

We move all terms to the left:

15-(-3(y-4))=0



We calculate terms in parentheses: -(-3(y-4)), so:

-3(y-4)

We multiply parentheses

-3y+12

Back to the equation:

-(-3y+12)



We get rid of parentheses

3y-12+15=0

We add all the numbers together, and all the variables

3y+3=0

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

3y=-3

y=-3/3

y=-1

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