1-3n=-20

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Solution for 1-3n=-20 equation: 



1-3n=-20

We move all terms to the left:

1-3n-(-20)=0

We add all the numbers together, and all the variables

-3n+21=0

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

-3n=-21

n=-21/-3

n=+7

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