4x+31=9x-9

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Solution for 4x+31=9x-9 equation: 



4x+31=9x-9

We move all terms to the left:

4x+31-(9x-9)=0

We get rid of parentheses

4x-9x+9+31=0

We add all the numbers together, and all the variables

-5x+40=0

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

-5x=-40

x=-40/-5

x=+8

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