x-9=2x-31

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Solution for x-9=2x-31 equation: 



x-9=2x-31

We move all terms to the left:

x-9-(2x-31)=0

We get rid of parentheses

x-2x+31-9=0

We add all the numbers together, and all the variables

-1x+22=0

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

-x=-22

x=-22/-1

x=+22

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