n+12=2n-20

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Solution for n+12=2n-20 equation: 



n+12=2n-20

We move all terms to the left:

n+12-(2n-20)=0

We get rid of parentheses

n-2n+20+12=0

We add all the numbers together, and all the variables

-1n+32=0

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

-n=-32

n=-32/-1

n=+32

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