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-7+5n-2n=n+3+6
We move all terms to the left:
-7+5n-2n-(n+3+6)=0
We add all the numbers together, and all the variables
5n-2n-(n+9)-7=0
We add all the numbers together, and all the variables
3n-(n+9)-7=0
We get rid of parentheses
3n-n-9-7=0
We add all the numbers together, and all the variables
2n-16=0
We move all terms containing n to the left, all other terms to the right
2n=16
n=16/2
n=8
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