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