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2n+4n=-12+8n
We move all terms to the left:
2n+4n-(-12+8n)=0
We add all the numbers together, and all the variables
2n+4n-(8n-12)=0
We add all the numbers together, and all the variables
6n-(8n-12)=0
We get rid of parentheses
6n-8n+12=0
We add all the numbers together, and all the variables
-2n+12=0
We move all terms containing n to the left, all other terms to the right
-2n=-12
n=-12/-2
n=+6
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