Quote:
Originally Posted by polle54
We etract 1 X on each side:
10X - X = 9.999... - 0,999...
9X = 9
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Normaly I'd say that 9,999...9-0,999...9 = 9.000...9 and NOT 9,000...0
BUT it plays somehow with the fact that an infinite set has the same number of elements as i.e. 2,3,4, X-times that infinite set.