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Subtract 21/80 from 28/3

1st number: 9 1/3, 2nd number: 21/80

28/3 - 21/80 is 2177/240.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 80 is 240
  2. For the 1st fraction, since 3 × 80 = 240,
    28/3 = 28 × 80/3 × 80 = 2240/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    21/80 = 21 × 3/80 × 3 = 63/240
  4. Subtract the two fractions:
    2240/240 - 63/240 = 2240 - 63/240 = 2177/240
  5. In mixed form: 917/240

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