12+3n=n+6n

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Solution for 12+3n=n+6n equation: 



12+3n=n+6n

We move all terms to the left:

12+3n-(n+6n)=0

We add all the numbers together, and all the variables

3n-(+7n)+12=0

We get rid of parentheses

3n-7n+12=0

We add all the numbers together, and all the variables

-4n+12=0

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

-4n=-12

n=-12/-4

n=+3

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