20=12+4n

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Solution for 20=12+4n equation: 



20=12+4n

We move all terms to the left:

20-(12+4n)=0

We add all the numbers together, and all the variables

-(4n+12)+20=0

We get rid of parentheses

-4n-12+20=0

We add all the numbers together, and all the variables

-4n+8=0

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

-4n=-8

n=-8/-4

n=+2

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