12=n+3+8n

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Solution for 12=n+3+8n equation: 



12=n+3+8n

We move all terms to the left:

12-(n+3+8n)=0

We add all the numbers together, and all the variables

-(9n+3)+12=0

We get rid of parentheses

-9n-3+12=0

We add all the numbers together, and all the variables

-9n+9=0

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

-9n=-9

n=-9/-9

n=1

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