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-6+n=-6-2n
We move all terms to the left:
-6+n-(-6-2n)=0
We add all the numbers together, and all the variables
n-(-2n-6)-6=0
We get rid of parentheses
n+2n+6-6=0
We add all the numbers together, and all the variables
3n=0
n=0/3
n=0
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