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Subtract 3/8 from 9/15

9/15 - 3/8 is 9/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 8 is 120
  2. For the 1st fraction, since 15 × 8 = 120,
    9/15 = 9 × 8/15 × 8 = 72/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    3/8 = 3 × 15/8 × 15 = 45/120
  4. Subtract the two fractions:
    72/120 - 45/120 = 72 - 45/120 = 27/120
  5. After reducing the fraction, the answer is 9/40

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