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Below, you will find the mathematical proof that 10 equals 9.99999…. .............. Can you find the error?

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Below, you will find the mathematical proof that 10 equals 9.99999…. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

posted Nov 19, 2014 by Anuradha Tabyal

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1 Answer

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x = 9.999999...
10x = 99.999999... this number ends with zero with same number of digits after dot
10x - x = 90 **here is the error as per above
99.99999...0
-9.99999...9

89.99999...1
The following steps are wrong because of the calculation at this step

answer Sep 3, 2018 by Hanifa Mammadov



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