-18=n-7-8

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Solution for -18=n-7-8 equation: 



-18=n-7-8

We move all terms to the left:

-18-(n-7-8)=0

We add all the numbers together, and all the variables

-(n-15)-18=0

We get rid of parentheses

-n+15-18=0

We add all the numbers together, and all the variables

-1n-3=0

We move all terms containing n to the left, all other terms to the right

-n=3

n=3/-1

n=-3

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