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