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Subtract 15/20 from 4/56

4/56 - 15/20 is -19/28.

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,
    4/56 = 4 × 5/56 × 5 = 20/280
  3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
    15/20 = 15 × 14/20 × 14 = 210/280
  4. Subtract the two like fractions:
    20/280 - 210/280 = 20 - 210/280 = -190/280
  5. After reducing the fraction, the answer is -19/28

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