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