3x+7=7x+31

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



3x+7=7x+31

We move all terms to the left:

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

We get rid of parentheses

3x-7x-31+7=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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