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Subtract 3/9 from 1/40

1/40 - 3/9 is -37/120.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    1/40 = 1 × 9/40 × 9 = 9/360
  3. Likewise, for the 2nd fraction, since 9 × 40 = 360,
    3/9 = 3 × 40/9 × 40 = 120/360
  4. Subtract the two like fractions:
    9/360 - 120/360 = 9 - 120/360 = -111/360
  5. After reducing the fraction, the answer is -37/120

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