15=-3(n+4)

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Solution for 15=-3(n+4) equation: 



15=-3(n+4)

We move all terms to the left:

15-(-3(n+4))=0



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

-3(n+4)

We multiply parentheses

-3n-12

Back to the equation:

-(-3n-12)



We get rid of parentheses

3n+12+15=0

We add all the numbers together, and all the variables

3n+27=0

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

3n=-27

n=-27/3

n=-9

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