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-4n+8=3n-12
We move all terms to the left:
-4n+8-(3n-12)=0
We get rid of parentheses
-4n-3n+12+8=0
We add all the numbers together, and all the variables
-7n+20=0
We move all terms containing n to the left, all other terms to the right
-7n=-20
n=-20/-7
n=2+6/7
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