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Subtract 9/40 from 2/7

2/7 - 9/40 is 17/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    2/7 = 2 × 40/7 × 40 = 80/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    9/40 = 9 × 7/40 × 7 = 63/280
  4. Subtract the two like fractions:
    80/280 - 63/280 = 80 - 63/280 = 17/280

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