31=7-4x

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Solution for 31=7-4x equation: 



31=7-4x

We move all terms to the left:

31-(7-4x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

4x-7+31=0

We add all the numbers together, and all the variables

4x+24=0

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

4x=-24

x=-24/4

x=-6

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