13=n+7+6

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Solution for 13=n+7+6 equation: 



13=n+7+6

We move all terms to the left:

13-(n+7+6)=0

We add all the numbers together, and all the variables

-(n+13)+13=0

We get rid of parentheses

-n-13+13=0

We add all the numbers together, and all the variables

-n=0

n=0/-1

n=0

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