[quote]
9x = 9.999... - .999...
9x = 9
[/quote]
Now I understand the concept of 1=.999..., I'm not trying to argue against it, but from my knowledge you can't do what you did in the lines I quoted, you would have to subtract .999.... From 9x as well.
I could be wrong but I'd like an explanation for why you can do this.
English
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x = .999... 10x = 9.999... 9x = 10x - x ==> 9x = 9.999... - .999...
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He did subtract .999... by subtracting x.