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Subtract 49/81 from 45/21

1st number: 2 3/21, 2nd number: 49/81

45/21 - 49/81 is 872/567.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 81 is 567
  2. For the 1st fraction, since 21 × 27 = 567,
    45/21 = 45 × 27/21 × 27 = 1215/567
  3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
    49/81 = 49 × 7/81 × 7 = 343/567
  4. Subtract the two fractions:
    1215/567 - 343/567 = 1215 - 343/567 = 872/567
  5. In mixed form: 1305/567

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