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Subtract 9/14 from 9/40

9/40 - 9/14 is -117/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 14 is 280
  2. For the 1st fraction, since 40 × 7 = 280,
    9/40 = 9 × 7/40 × 7 = 63/280
  3. Likewise, for the 2nd fraction, since 14 × 20 = 280,
    9/14 = 9 × 20/14 × 20 = 180/280
  4. Subtract the two fractions:
    63/280 - 180/280 = 63 - 180/280 = -117/280

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