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Subtract 20/21 from 35/24

1st number: 1 11/24, 2nd number: 20/21

35/24 - 20/21 is 85/168.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 24 × 7 = 168,
    35/24 = 35 × 7/24 × 7 = 245/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    20/21 = 20 × 8/21 × 8 = 160/168
  4. Subtract the two like fractions:
    245/168 - 160/168 = 245 - 160/168 = 85/168

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