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Subtract 8/81 from 9/15

9/15 - 8/81 is 203/405.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 81 is 405
  2. For the 1st fraction, since 15 × 27 = 405,
    9/15 = 9 × 27/15 × 27 = 243/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    8/81 = 8 × 5/81 × 5 = 40/405
  4. Subtract the two fractions:
    243/405 - 40/405 = 243 - 40/405 = 203/405

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