n+20=2n+1

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Solution for n+20=2n+1 equation: 



n+20=2n+1

We move all terms to the left:

n+20-(2n+1)=0

We get rid of parentheses

n-2n-1+20=0

We add all the numbers together, and all the variables

-1n+19=0

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

-n=-19

n=-19/-1

n=+19

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