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16 votes
16 votes
Express 7. 66 repeating as a ratio of two integers.

User Omar Martinez
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1 Answer

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13 votes
Method A: 7.6666.... = 7 + 0.6666... = 7 + 2/3 = 21/3 + 2/3 = 23/3

Method B: 10(7.666...) - 1(7.666...) = 76.666... - 7.666... = 69.000...
(10 - 1)(7.666...) = 69
7.666... = 69/9 = 23/3
User Woody Zenfell III
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