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-12=-4n+4+8n
We move all terms to the left:
-12-(-4n+4+8n)=0
We add all the numbers together, and all the variables
-(4n+4)-12=0
We get rid of parentheses
-4n-4-12=0
We add all the numbers together, and all the variables
-4n-16=0
We move all terms containing n to the left, all other terms to the right
-4n=16
n=16/-4
n=-4
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