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-4=4+n+3n
We move all terms to the left:
-4-(4+n+3n)=0
We add all the numbers together, and all the variables
-(4n+4)-4=0
We get rid of parentheses
-4n-4-4=0
We add all the numbers together, and all the variables
-4n-8=0
We move all terms containing n to the left, all other terms to the right
-4n=8
n=8/-4
n=-2
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