-105=-7(n+3)

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Solution for -105=-7(n+3) equation: 



-105=-7(n+3)

We move all terms to the left:

-105-(-7(n+3))=0



We calculate terms in parentheses: -(-7(n+3)), so:

-7(n+3)

We multiply parentheses

-7n-21

Back to the equation:

-(-7n-21)



We get rid of parentheses

7n+21-105=0

We add all the numbers together, and all the variables

7n-84=0

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

7n=84

n=84/7

n=12

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