X-9=7x

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Solution for X-9=7x equation: 



X-9=7X

We move all terms to the left:

X-9-(7X)=0

We add all the numbers together, and all the variables

-6X-9=0

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

-6X=9

X=9/-6

X=-1+1/2

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