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Subtract 1/81 from 9/7

1st number: 1 2/7, 2nd number: 1/81

9/7 - 1/81 is 722/567.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 81 is 567

    Next, find the equivalent fraction of both fractional numbers with denominator 567
  2. For the 1st fraction, since 7 × 81 = 567,
    9/7 = 9 × 81/7 × 81 = 729/567
  3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
    1/81 = 1 × 7/81 × 7 = 7/567
  4. Subtract the two like fractions:
    729/567 - 7/567 = 729 - 7/567 = 722/567
  5. In mixed form: 1155/567

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