-100=-7n-8(n+5)

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Solution for -100=-7n-8(n+5) equation: 



-100=-7n-8(n+5)

We move all terms to the left:

-100-(-7n-8(n+5))=0



We calculate terms in parentheses: -(-7n-8(n+5)), so:

-7n-8(n+5)

We multiply parentheses

-7n-8n-40

We add all the numbers together, and all the variables

-15n-40

Back to the equation:

-(-15n-40)



We get rid of parentheses

15n+40-100=0

We add all the numbers together, and all the variables

15n-60=0

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

15n=60

n=60/15

n=4

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