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Subtract 9/81 from 15/75

15/75 - 9/81 is 4/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 81 is 2025
  2. For the 1st fraction, since 75 × 27 = 2025,
    15/75 = 15 × 27/75 × 27 = 405/2025
  3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
    9/81 = 9 × 25/81 × 25 = 225/2025
  4. Subtract the two fractions:
    405/2025 - 225/2025 = 405 - 225/2025 = 180/2025
  5. After reducing the fraction, the answer is 4/45

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