12=3+2n

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Solution for 12=3+2n equation: 



12=3+2n

We move all terms to the left:

12-(3+2n)=0

We add all the numbers together, and all the variables

-(2n+3)+12=0

We get rid of parentheses

-2n-3+12=0

We add all the numbers together, and all the variables

-2n+9=0

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

-2n=-9

n=-9/-2

n=4+1/2

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