31=3n+10

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Solution for 31=3n+10 equation: 



31=3n+10

We move all terms to the left:

31-(3n+10)=0

We get rid of parentheses

-3n-10+31=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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