-120=-5(7+2n)-7n

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Solution for -120=-5(7+2n)-7n equation: 



-120=-5(7+2n)-7n

We move all terms to the left:

-120-(-5(7+2n)-7n)=0

We add all the numbers together, and all the variables

-(-5(2n+7)-7n)-120=0



We calculate terms in parentheses: -(-5(2n+7)-7n), so:

-5(2n+7)-7n

We add all the numbers together, and all the variables

-7n-5(2n+7)

We multiply parentheses

-7n-10n-35

We add all the numbers together, and all the variables

-17n-35

Back to the equation:

-(-17n-35)



We get rid of parentheses

17n+35-120=0

We add all the numbers together, and all the variables

17n-85=0

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

17n=85

n=85/17

n=5

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