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8=15+3n
We move all terms to the left:
8-(15+3n)=0
We add all the numbers together, and all the variables
-(3n+15)+8=0
We get rid of parentheses
-3n-15+8=0
We add all the numbers together, and all the variables
-3n-7=0
We move all terms containing n to the left, all other terms to the right
-3n=7
n=7/-3
n=-2+1/3
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