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-2n-4-n=-3n-4
We move all terms to the left:
-2n-4-n-(-3n-4)=0
We add all the numbers together, and all the variables
-3n-(-3n-4)-4=0
We get rid of parentheses
-3n+3n+4-4=0
We add all the numbers together, and all the variables
=0
n=0/1
n=0
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