20=8+3n

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Solution for 20=8+3n equation: 



20=8+3n

We move all terms to the left:

20-(8+3n)=0

We add all the numbers together, and all the variables

-(3n+8)+20=0

We get rid of parentheses

-3n-8+20=0

We add all the numbers together, and all the variables

-3n+12=0

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

-3n=-12

n=-12/-3

n=+4

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