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12n-12=n+3
We move all terms to the left:
12n-12-(n+3)=0
We get rid of parentheses
12n-n-3-12=0
We add all the numbers together, and all the variables
11n-15=0
We move all terms containing n to the left, all other terms to the right
11n=15
n=15/11
n=1+4/11
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