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8n-12=-12n=8
We move all terms to the left:
8n-12-(-12n)=0
We get rid of parentheses
8n+12n-12=0
We add all the numbers together, and all the variables
20n-12=0
We move all terms containing n to the left, all other terms to the right
20n=12
n=12/20
n=3/5
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