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28 July, 02:53

Write each repeating decimal as a fraction in simplest form:

1. 0.21 repeating

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  1. 28 July, 06:19
    0
    0.21212121212121212121 ... = 7/33.

    How did I find this out?

    n=0.212121212121 ...

    100n=21.212121212121 ...

    100n-n=99n=21

    Therefore n=21/99=7/33
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