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Subtract 6/15 from 3/40

3/40 - 6/15 is -13/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 15 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 40 × 3 = 120,
    3/40 = 3 × 3/40 × 3 = 9/120
  3. Likewise, for the 2nd fraction, since 15 × 8 = 120,
    6/15 = 6 × 8/15 × 8 = 48/120
  4. Subtract the two like fractions:
    9/120 - 48/120 = 9 - 48/120 = -39/120
  5. After reducing the fraction, the answer is -13/40

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