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Subtract 21/56 from 72/28

1st number: 2 16/28, 2nd number: 21/56

72/28 - 21/56 is 123/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 56 is 56
  2. For the 1st fraction, since 28 × 2 = 56,
    72/28 = 72 × 2/28 × 2 = 144/56
  3. Likewise, for the 2nd fraction, since 56 × 1 = 56,
    21/56 = 21 × 1/56 × 1 = 21/56
  4. Subtract the two fractions:
    144/56 - 21/56 = 144 - 21/56 = 123/56
  5. In mixed form: 211/56

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