31=3-3n-4n

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Solution for 31=3-3n-4n equation: 



31=3-3n-4n

We move all terms to the left:

31-(3-3n-4n)=0

We add all the numbers together, and all the variables

-(-7n+3)+31=0

We get rid of parentheses

7n-3+31=0

We add all the numbers together, and all the variables

7n+28=0

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

7n=-28

n=-28/7

n=-4

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