3n=n-12

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Solution for 3n=n-12 equation: 



3n=n-12

We move all terms to the left:

3n-(n-12)=0

We get rid of parentheses

3n-n+12=0

We add all the numbers together, and all the variables

2n+12=0

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

2n=-12

n=-12/2

n=-6

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