-9+n-9=9-8n

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Solution for -9+n-9=9-8n equation: 



-9+n-9=9-8n

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

n-(-8n+9)-18=0

We get rid of parentheses

n+8n-9-18=0

We add all the numbers together, and all the variables

9n-27=0

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

9n=27

n=27/9

n=3

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