31=3x+2x+x

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Solution for 31=3x+2x+x equation: 



31=3x+2x+x

We move all terms to the left:

31-(3x+2x+x)=0

We add all the numbers together, and all the variables

-(+6x)+31=0

We get rid of parentheses

-6x+31=0

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

-6x=-31

x=-31/-6

x=5+1/6

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