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8n=4n-56
We move all terms to the left:
8n-(4n-56)=0
We get rid of parentheses
8n-4n+56=0
We add all the numbers together, and all the variables
4n+56=0
We move all terms containing n to the left, all other terms to the right
4n=-56
n=-56/4
n=-14
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