X-2x=-9

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Solution for X-2x=-9 equation: 



X-2X=-9

We move all terms to the left:

X-2X-(-9)=0

We add all the numbers together, and all the variables

-1X+9=0

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

-X=-9

X=-9/-1

X=+9

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