-n-7n=-8(n-9)+9(-2n+2)

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Solution for -n-7n=-8(n-9)+9(-2n+2) equation: 



-n-7n=-8(n-9)+9(-2n+2)

We move all terms to the left:

-n-7n-(-8(n-9)+9(-2n+2))=0

We add all the numbers together, and all the variables

-8n-(-8(n-9)+9(-2n+2))=0



We calculate terms in parentheses: -(-8(n-9)+9(-2n+2)), so:

-8(n-9)+9(-2n+2)

We multiply parentheses

-8n-18n+72+18

We add all the numbers together, and all the variables

-26n+90

Back to the equation:

-(-26n+90)



We get rid of parentheses

-8n+26n-90=0

We add all the numbers together, and all the variables

18n-90=0

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

18n=90

n=90/18

n=5

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