-n-9=9-5n+7n

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Solution for -n-9=9-5n+7n equation: 



-n-9=9-5n+7n

We move all terms to the left:

-n-9-(9-5n+7n)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-1n-(2n+9)-9=0

We get rid of parentheses

-1n-2n-9-9=0

We add all the numbers together, and all the variables

-3n-18=0

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

-3n=18

n=18/-3

n=-6

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