What is 0.21212121.... as a fraction

ANSWERS

2015-10-28 17:37:18

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

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