31=7x-5-3x

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Solution for 31=7x-5-3x equation: 



31=7x-5-3x

We move all terms to the left:

31-(7x-5-3x)=0

We add all the numbers together, and all the variables

-(4x-5)+31=0

We get rid of parentheses

-4x+5+31=0

We add all the numbers together, and all the variables

-4x+36=0

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

-4x=-36

x=-36/-4

x=+9

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