-9-12n-8n-9=0

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Solution for -9-12n-8n-9=0 equation: 



-9-12n-8n-9=0

We add all the numbers together, and all the variables

-20n-18=0

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

-20n=18

n=18/-20

n=-9/10

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