31-3n=19

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Solution for 31-3n=19 equation: 



31-3n=19

We move all terms to the left:

31-3n-(19)=0

We add all the numbers together, and all the variables

-3n+12=0

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

-3n=-12

n=-12/-3

n=+4

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