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Subtract 21/56 from 72/54

1st number: 1 18/54, 2nd number: 21/56

72/54 - 21/56 is 23/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 56 is 1512

    Next, find the equivalent fraction of both fractional numbers with denominator 1512
  2. For the 1st fraction, since 54 × 28 = 1512,
    72/54 = 72 × 28/54 × 28 = 2016/1512
  3. Likewise, for the 2nd fraction, since 56 × 27 = 1512,
    21/56 = 21 × 27/56 × 27 = 567/1512
  4. Subtract the two like fractions:
    2016/1512 - 567/1512 = 2016 - 567/1512 = 1449/1512
  5. After reducing the fraction, the answer is 23/24

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