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Subtract 4/81 from 3/8

3/8 - 4/81 is 211/648.

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,
    3/8 = 3 × 81/8 × 81 = 243/648
  3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
    4/81 = 4 × 8/81 × 8 = 32/648
  4. Subtract the two like fractions:
    243/648 - 32/648 = 243 - 32/648 = 211/648

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