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Subtract 3/81 from 1/8

1/8 - 3/81 is 19/216.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 81 is 648

    Next, find the equivalent fraction of both fractional numbers with denominator 648
  2. For the 1st fraction, since 8 × 81 = 648,
    1/8 = 1 × 81/8 × 81 = 81/648
  3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
    3/81 = 3 × 8/81 × 8 = 24/648
  4. Subtract the two like fractions:
    81/648 - 24/648 = 81 - 24/648 = 57/648
  5. After reducing the fraction, the answer is 19/216

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