9=n-(-13)

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Solution for 9=n-(-13) equation: 



9=n-(-13)

We move all terms to the left:

9-(n-(-13))=0



We calculate terms in parentheses: -(n-(-13)), so:

n-(-13)

We add all the numbers together, and all the variables

n+13

Back to the equation:

-(n+13)



We get rid of parentheses

-n-13+9=0

We add all the numbers together, and all the variables

-1n-4=0

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

-n=4

n=4/-1

n=-4

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