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-7(-n+4)=-84
We move all terms to the left:
-7(-n+4)-(-84)=0
We add all the numbers together, and all the variables
-7(-1n+4)-(-84)=0
We add all the numbers together, and all the variables
-7(-1n+4)+84=0
We multiply parentheses
7n-28+84=0
We add all the numbers together, and all the variables
7n+56=0
We move all terms containing n to the left, all other terms to the right
7n=-56
n=-56/7
n=-8
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