3x+9=5x-31

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Solution for 3x+9=5x-31 equation: 



3x+9=5x-31

We move all terms to the left:

3x+9-(5x-31)=0

We get rid of parentheses

3x-5x+31+9=0

We add all the numbers together, and all the variables

-2x+40=0

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

-2x=-40

x=-40/-2

x=+20

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