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13=-n/10
We move all terms to the left:
13-(-n/10)=0
We get rid of parentheses
n/10+13=0
We multiply all the terms by the denominator
n+13*10=0
We add all the numbers together, and all the variables
n+130=0
We move all terms containing n to the left, all other terms to the right
n=-130
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