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Subtract 9/56 from 20/40

20/40 - 9/56 is 19/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 56 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    20/40 = 20 × 7/40 × 7 = 140/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    9/56 = 9 × 5/56 × 5 = 45/280
  4. Subtract the two like fractions:
    140/280 - 45/280 = 140 - 45/280 = 95/280
  5. After reducing the fraction, the answer is 19/56

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