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-15-n=n-6+3
We move all terms to the left:
-15-n-(n-6+3)=0
We add all the numbers together, and all the variables
-n-(n-3)-15=0
We add all the numbers together, and all the variables
-1n-(n-3)-15=0
We get rid of parentheses
-1n-n+3-15=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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