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n+56=-9n-77
We move all terms to the left:
n+56-(-9n-77)=0
We get rid of parentheses
n+9n+77+56=0
We add all the numbers together, and all the variables
10n+133=0
We move all terms containing n to the left, all other terms to the right
10n=-133
n=-133/10
n=-13+3/10
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