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2n+8=3n-30
We move all terms to the left:
2n+8-(3n-30)=0
We get rid of parentheses
2n-3n+30+8=0
We add all the numbers together, and all the variables
-1n+38=0
We move all terms containing n to the left, all other terms to the right
-n=-38
n=-38/-1
n=+38
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