84=4(4n-7)

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Solution for 84=4(4n-7) equation: 



84=4(4n-7)

We move all terms to the left:

84-(4(4n-7))=0



We calculate terms in parentheses: -(4(4n-7)), so:

4(4n-7)

We multiply parentheses

16n-28

Back to the equation:

-(16n-28)



We get rid of parentheses

-16n+28+84=0

We add all the numbers together, and all the variables

-16n+112=0

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

-16n=-112

n=-112/-16

n=+7

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