-105=-7(7-n)+n

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Solution for -105=-7(7-n)+n equation: 



-105=-7(7-n)+n

We move all terms to the left:

-105-(-7(7-n)+n)=0

We add all the numbers together, and all the variables

-(-7(-1n+7)+n)-105=0



We calculate terms in parentheses: -(-7(-1n+7)+n), so:

-7(-1n+7)+n

We add all the numbers together, and all the variables

n-7(-1n+7)

We multiply parentheses

n+7n-49

We add all the numbers together, and all the variables

8n-49

Back to the equation:

-(8n-49)



We get rid of parentheses

-8n+49-105=0

We add all the numbers together, and all the variables

-8n-56=0

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

-8n=56

n=56/-8

n=-7

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