-9(2n-20)=n+9

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Solution for -9(2n-20)=n+9 equation: 



-9(2n-20)=n+9

We move all terms to the left:

-9(2n-20)-(n+9)=0

We multiply parentheses

-18n-(n+9)+180=0

We get rid of parentheses

-18n-n-9+180=0

We add all the numbers together, and all the variables

-19n+171=0

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

-19n=-171

n=-171/-19

n=+9

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