18-(-n)=31

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Solution for 18-(-n)=31 equation: 



18-(-n)=31

We move all terms to the left:

18-(-n)-(31)=0

We add all the numbers together, and all the variables

-(-1n)+18-31=0

We add all the numbers together, and all the variables

-(-1n)-13=0

We get rid of parentheses

1n-13=0

We add all the numbers together, and all the variables

n-13=0

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

n=13

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