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One Equals 0.99999...

Confusing math…

     I came across this a few times. They say once you go into Calculus, it’s understandable, but me having not gone that far, find this pretty strange…

x = 0.99999…

10x = 9.99999…

10x-x = 9.99999… - 0.99999…

9x = 9

x = 1

Last Updated Dec 28, 2008

Responses

realn says...

It's because of the conversion from fraction to decimal math, another thing is 1 = 9/9 = 0.9999... = 9.../10... = 1

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