12=0.9n

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Solution for 12=0.9n equation: 



12=0.9n

We move all terms to the left:

12-(0.9n)=0

We add all the numbers together, and all the variables

-(+0.9n)+12=0

We get rid of parentheses

-0.9n+12=0

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

-0.9n=-12

n=-12/-0.9

n=13+0.3/0.9

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