-9-20n=-7(4n-17)

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Solution for -9-20n=-7(4n-17) equation: 



-9-20n=-7(4n-17)

We move all terms to the left:

-9-20n-(-7(4n-17))=0



We calculate terms in parentheses: -(-7(4n-17)), so:

-7(4n-17)

We multiply parentheses

-28n+119

Back to the equation:

-(-28n+119)



We get rid of parentheses

-20n+28n-119-9=0

We add all the numbers together, and all the variables

8n-128=0

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

8n=128

n=128/8

n=16

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