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Subtract 4/21 from 28/5

1st number: 5 3/5, 2nd number: 4/21

28/5 - 4/21 is 568/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 5 × 21 = 105,
    28/5 = 28 × 21/5 × 21 = 588/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    4/21 = 4 × 5/21 × 5 = 20/105
  4. Subtract the two like fractions:
    588/105 - 20/105 = 588 - 20/105 = 568/105
  5. In mixed form: 543/105

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