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Subtract 4/20 from 28/49

28/49 - 4/20 is 13/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 20 is 980

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 49 × 20 = 980,
    28/49 = 28 × 20/49 × 20 = 560/980
  3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
    4/20 = 4 × 49/20 × 49 = 196/980
  4. Subtract the two like fractions:
    560/980 - 196/980 = 560 - 196/980 = 364/980
  5. After reducing the fraction, the answer is 13/35

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