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Subtract 5/28 from 28/21

1st number: 1 7/21, 2nd number: 5/28

28/21 - 5/28 is 97/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    28/21 = 28 × 4/21 × 4 = 112/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    5/28 = 5 × 3/28 × 3 = 15/84
  4. Subtract the two like fractions:
    112/84 - 15/84 = 112 - 15/84 = 97/84
  5. In mixed form: 113/84

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