20=4n-12

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Solution for 20=4n-12 equation: 



20=4n-12

We move all terms to the left:

20-(4n-12)=0

We get rid of parentheses

-4n+12+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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