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-27=-3+2n
We move all terms to the left:
-27-(-3+2n)=0
We add all the numbers together, and all the variables
-(2n-3)-27=0
We get rid of parentheses
-2n+3-27=0
We add all the numbers together, and all the variables
-2n-24=0
We move all terms containing n to the left, all other terms to the right
-2n=24
n=24/-2
n=-12
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