-84=4(3+3n)

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Solution for -84=4(3+3n) equation: 



-84=4(3+3n)

We move all terms to the left:

-84-(4(3+3n))=0

We add all the numbers together, and all the variables

-(4(3n+3))-84=0



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

4(3n+3)

We multiply parentheses

12n+12

Back to the equation:

-(12n+12)



We get rid of parentheses

-12n-12-84=0

We add all the numbers together, and all the variables

-12n-96=0

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

-12n=96

n=96/-12

n=-8

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