marissar0300 marissar0300
  • 16-08-2021
  • Mathematics
contestada

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

Respuesta :

colinspurdle colinspurdle
  • 16-08-2021
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
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