-7(n+78)=84

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Solution for -7(n+78)=84 equation: 



-7(n+78)=84

We move all terms to the left:

-7(n+78)-(84)=0

We multiply parentheses

-7n-546-84=0

We add all the numbers together, and all the variables

-7n-630=0

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

-7n=630

n=630/-7

n=-90

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