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Subtract 4/7 from 1/81

1/81 - 4/7 is -317/567.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 567
  2. For the 1st fraction, since 81 × 7 = 567,
    1/81 = 1 × 7/81 × 7 = 7/567
  3. Likewise, for the 2nd fraction, since 7 × 81 = 567,
    4/7 = 4 × 81/7 × 81 = 324/567
  4. Subtract the two like fractions:
    7/567 - 324/567 = 7 - 324/567 = -317/567

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