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Subtract 9/20 from 12/56

12/56 - 9/20 is -33/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 20 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 56 × 5 = 280,
    12/56 = 12 × 5/56 × 5 = 60/280
  3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
    9/20 = 9 × 14/20 × 14 = 126/280
  4. Subtract the two like fractions:
    60/280 - 126/280 = 60 - 126/280 = -66/280
  5. After reducing the fraction, the answer is -33/140

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