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Subtract 1/30 from 10/81

10/81 - 1/30 is 73/810.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 30 is 810

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 81 × 10 = 810,
    10/81 = 10 × 10/81 × 10 = 100/810
  3. Likewise, for the 2nd fraction, since 30 × 27 = 810,
    1/30 = 1 × 27/30 × 27 = 27/810
  4. Subtract the two like fractions:
    100/810 - 27/810 = 100 - 27/810 = 73/810

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