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-56=7n+7
We move all terms to the left:
-56-(7n+7)=0
We get rid of parentheses
-7n-7-56=0
We add all the numbers together, and all the variables
-7n-63=0
We move all terms containing n to the left, all other terms to the right
-7n=63
n=63/-7
n=-9
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