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Subtract 21/60 from 28/8

1st number: 3 4/8, 2nd number: 21/60

28/8 - 21/60 is 63/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 60 is 120
  2. For the 1st fraction, since 8 × 15 = 120,
    28/8 = 28 × 15/8 × 15 = 420/120
  3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
    21/60 = 21 × 2/60 × 2 = 42/120
  4. Subtract the two fractions:
    420/120 - 42/120 = 420 - 42/120 = 378/120
  5. After reducing the fraction, the answer is 63/20
  6. In mixed form: 33/20

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