16.012011

What is 0.21212121.... as a fraction

PazKlohr643 Mathematics 2 42

What is 0.21212121.... as a fraction

Posted by PazKlohr643 | Posted at Jan 16, 2011 | Categories: Mathematics

Answers

haleyjomarie99
haleyjomarie99

If we make the number equal to x... 0.21212121.... = x  multiply each side by 100 21.212121.... = 100x  remember that x is 0.21212121? we can subtract that now from 21.21212121, as well as x from 100. 21.212121... - 0.212121... = 100x - x  we are left with 21 = 99x 21 = 99x  simplify.... 7 = 33x  and divide! 7/33 = x Your answer is: 0.2121212121.... = 7/33

Jan 16, 2011 05:31

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