n+20=3n

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Solution for n+20=3n equation: 



n+20=3n

We move all terms to the left:

n+20-(3n)=0

We add all the numbers together, and all the variables

-2n+20=0

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

-2n=-20

n=-20/-2

n=+10

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