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การบวกลบเศษส่วน � ...

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  • 33/27 - 1/3 = ?
    24/27
  • 7/6 + 1/36 = ?
    43/36
  • 23/55 - 2/11 = ?
    13/55
  • 3/2 + 5/4 = ?
    11/4
  • 7/9 + 2/3 = ?
    13/9
  • 3/7 - 5/21 = ?
    4/21
  • 9/4 - 7/12 = ?
    20/12
  • 11/25 + 4/5 = ?
    31/25