12+n=2n+3

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Solution for 12+n=2n+3 equation: 



12+n=2n+3

We move all terms to the left:

12+n-(2n+3)=0

We get rid of parentheses

n-2n-3+12=0

We add all the numbers together, and all the variables

-1n+9=0

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

-n=-9

n=-9/-1

n=+9

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