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Subtract 3/81 from 1/54

1/54 - 3/81 is -1/54.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 81 is 162

    Next, find the equivalent fraction of both fractional numbers with denominator 162
  2. For the 1st fraction, since 54 × 3 = 162,
    1/54 = 1 × 3/54 × 3 = 3/162
  3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
    3/81 = 3 × 2/81 × 2 = 6/162
  4. Subtract the two like fractions:
    3/162 - 6/162 = 3 - 6/162 = -3/162
  5. After reducing the fraction, the answer is -1/54

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