X+20+2x-12=4x-9

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Solution for X+20+2x-12=4x-9 equation: 



X+20+2X-12=4X-9

We move all terms to the left:

X+20+2X-12-(4X-9)=0

We add all the numbers together, and all the variables

3X-(4X-9)+8=0

We get rid of parentheses

3X-4X+9+8=0

We add all the numbers together, and all the variables

-1X+17=0

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

-X=-17

X=-17/-1

X=+17

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