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Subtract 9/40 from 5/28

5/28 - 9/40 is -13/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 28 × 10 = 280,
    5/28 = 5 × 10/28 × 10 = 50/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    9/40 = 9 × 7/40 × 7 = 63/280
  4. Subtract the two like fractions:
    50/280 - 63/280 = 50 - 63/280 = -13/280

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