84=-7(6-3n)

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Solution for 84=-7(6-3n) equation: 



84=-7(6-3n)

We move all terms to the left:

84-(-7(6-3n))=0

We add all the numbers together, and all the variables

-(-7(-3n+6))+84=0



We calculate terms in parentheses: -(-7(-3n+6)), so:

-7(-3n+6)

We multiply parentheses

21n-42

Back to the equation:

-(21n-42)



We get rid of parentheses

-21n+42+84=0

We add all the numbers together, and all the variables

-21n+126=0

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

-21n=-126

n=-126/-21

n=+6

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