3x+31=5x+7

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



3x+31=5x+7

We move all terms to the left:

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

We get rid of parentheses

3x-5x-7+31=0

We add all the numbers together, and all the variables

-2x+24=0

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

-2x=-24

x=-24/-2

x=+12

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