20=4+2n

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Solution for 20=4+2n equation: 



20=4+2n

We move all terms to the left:

20-(4+2n)=0

We add all the numbers together, and all the variables

-(2n+4)+20=0

We get rid of parentheses

-2n-4+20=0

We add all the numbers together, and all the variables

-2n+16=0

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

-2n=-16

n=-16/-2

n=+8

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