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5n-7=2n-8
We move all terms to the left:
5n-7-(2n-8)=0
We get rid of parentheses
5n-2n+8-7=0
We add all the numbers together, and all the variables
3n+1=0
We move all terms containing n to the left, all other terms to the right
3n=-1
n=-1/3
n=-1/3
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