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81-4n+8n=8-4n
We move all terms to the left:
81-4n+8n-(8-4n)=0
We add all the numbers together, and all the variables
-4n+8n-(-4n+8)+81=0
We add all the numbers together, and all the variables
4n-(-4n+8)+81=0
We get rid of parentheses
4n+4n-8+81=0
We add all the numbers together, and all the variables
8n+73=0
We move all terms containing n to the left, all other terms to the right
8n=-73
n=-73/8
n=-9+1/8
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