X-9=12x

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Solution for X-9=12x equation: 



X-9=12X

We move all terms to the left:

X-9-(12X)=0

We add all the numbers together, and all the variables

-11X-9=0

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

-11X=9

X=9/-11

X=-9/11

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