Repeating decimals in essence are decimals that go on for ever. To convert a repeating decimals into a fraction, you would take the number after the decimal that is repeating, and put it over the number nine. For example, 0.7777 is 7/9. If, however, there are two numbers being repeated, the you would put them over 99. For example, you would write 45/99. If there is a number before the decimal, you would just add it to the fraction.
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