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Subtract 75/81 from 9/25

9/25 - 75/81 is -382/675.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 81 is 2025

    Next, find the equivalent fraction of both fractional numbers with denominator 2025
  2. For the 1st fraction, since 25 × 81 = 2025,
    9/25 = 9 × 81/25 × 81 = 729/2025
  3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
    75/81 = 75 × 25/81 × 25 = 1875/2025
  4. Subtract the two like fractions:
    729/2025 - 1875/2025 = 729 - 1875/2025 = -1146/2025
  5. After reducing the fraction, the answer is -382/675

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