100=-5(8+7n)

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



100=-5(8+7n)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-5(7n+8)

We multiply parentheses

-35n-40

Back to the equation:

-(-35n-40)



We get rid of parentheses

35n+40+100=0

We add all the numbers together, and all the variables

35n+140=0

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

35n=-140

n=-140/35

n=-4

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