-18=-(7+n)

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Solution for -18=-(7+n) equation: 



-18=-(7+n)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-(n+7)), so:

-(n+7)

We get rid of parentheses

-n-7

We add all the numbers together, and all the variables

-1n-7

Back to the equation:

-(-1n-7)



We get rid of parentheses

1n+7-18=0

We add all the numbers together, and all the variables

n-11=0

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

n=11

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