9+3=12n

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Solution for 9+3=12n equation: 



9+3=12n

We move all terms to the left:

9+3-(12n)=0

We add all the numbers together, and all the variables

-12n+12=0

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

-12n=-12

n=-12/-12

n=1

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