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Subtract 20/21 from 63/3

1st number: 21 0/3, 2nd number: 20/21

63/3 - 20/21 is 421/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 21 is 21
  2. For the 1st fraction, since 3 × 7 = 21,
    63/3 = 63 × 7/3 × 7 = 441/21
  3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
    20/21 = 20 × 1/21 × 1 = 20/21
  4. Subtract the two fractions:
    441/21 - 20/21 = 441 - 20/21 = 421/21
  5. In mixed form: 201/21

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