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Subtract 21/80 from 28/75

28/75 - 21/80 is 133/1200.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 80 is 1200
  2. For the 1st fraction, since 75 × 16 = 1200,
    28/75 = 28 × 16/75 × 16 = 448/1200
  3. Likewise, for the 2nd fraction, since 80 × 15 = 1200,
    21/80 = 21 × 15/80 × 15 = 315/1200
  4. Subtract the two fractions:
    448/1200 - 315/1200 = 448 - 315/1200 = 133/1200

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