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3n-12=5n+16
We move all terms to the left:
3n-12-(5n+16)=0
We get rid of parentheses
3n-5n-16-12=0
We add all the numbers together, and all the variables
-2n-28=0
We move all terms containing n to the left, all other terms to the right
-2n=28
n=28/-2
n=-14
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