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Subtract 28/63 from 20/49

20/49 - 28/63 is -16/441.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 63 is 441

    Next, find the equivalent fraction of both fractional numbers with denominator 441
  2. For the 1st fraction, since 49 × 9 = 441,
    20/49 = 20 × 9/49 × 9 = 180/441
  3. Likewise, for the 2nd fraction, since 63 × 7 = 441,
    28/63 = 28 × 7/63 × 7 = 196/441
  4. Subtract the two like fractions:
    180/441 - 196/441 = 180 - 196/441 = -16/441

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