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Subtract 3/40 from 3/9

3/9 - 3/40 is 31/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 9 × 40 = 360,
    3/9 = 3 × 40/9 × 40 = 120/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    3/40 = 3 × 9/40 × 9 = 27/360
  4. Subtract the two like fractions:
    120/360 - 27/360 = 120 - 27/360 = 93/360
  5. After reducing the fraction, the answer is 31/120

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