20=8+4n

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Solution for 20=8+4n equation: 



20=8+4n

We move all terms to the left:

20-(8+4n)=0

We add all the numbers together, and all the variables

-(4n+8)+20=0

We get rid of parentheses

-4n-8+20=0

We add all the numbers together, and all the variables

-4n+12=0

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

-4n=-12

n=-12/-4

n=+3

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