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Subtract 27/7 from 63/20

1st number: 3 3/20, 2nd number: 3 6/7

63/20 - 27/7 is -99/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    63/20 = 63 × 7/20 × 7 = 441/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    27/7 = 27 × 20/7 × 20 = 540/140
  4. Subtract the two fractions:
    441/140 - 540/140 = 441 - 540/140 = -99/140

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