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Subtract 4/20 from 24/21

1st number: 1 3/21, 2nd number: 4/20

24/21 - 4/20 is 33/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420
  2. For the 1st fraction, since 21 × 20 = 420,
    24/21 = 24 × 20/21 × 20 = 480/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    4/20 = 4 × 21/20 × 21 = 84/420
  4. Subtract the two fractions:
    480/420 - 84/420 = 480 - 84/420 = 396/420
  5. After reducing the fraction, the answer is 33/35

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