-15-6n=-3(3n+7)

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Solution for -15-6n=-3(3n+7) equation: 



-15-6n=-3(3n+7)

We move all terms to the left:

-15-6n-(-3(3n+7))=0



We calculate terms in parentheses: -(-3(3n+7)), so:

-3(3n+7)

We multiply parentheses

-9n-21

Back to the equation:

-(-9n-21)



We get rid of parentheses

-6n+9n+21-15=0

We add all the numbers together, and all the variables

3n+6=0

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

3n=-6

n=-6/3

n=-2

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