-31=4-3x+7x

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Solution for -31=4-3x+7x equation: 



-31=4-3x+7x

We move all terms to the left:

-31-(4-3x+7x)=0

We add all the numbers together, and all the variables

-(4x+4)-31=0

We get rid of parentheses

-4x-4-31=0

We add all the numbers together, and all the variables

-4x-35=0

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

-4x=35

x=35/-4

x=-8+3/4

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