-12+4n=20

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Solution for -12+4n=20 equation: 



-12+4n=20

We move all terms to the left:

-12+4n-(20)=0

We add all the numbers together, and all the variables

4n-32=0

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

4n=32

n=32/4

n=8

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