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15n-12n=n+2
We move all terms to the left:
15n-12n-(n+2)=0
We add all the numbers together, and all the variables
3n-(n+2)=0
We get rid of parentheses
3n-n-2=0
We add all the numbers together, and all the variables
2n-2=0
We move all terms containing n to the left, all other terms to the right
2n=2
n=2/2
n=1
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