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Subtract 4/63 from 5/21

5/21 - 4/63 is 11/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    5/21 = 5 × 3/21 × 3 = 15/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    4/63 = 4 × 1/63 × 1 = 4/63
  4. Subtract the two fractions:
    15/63 - 4/63 = 15 - 4/63 = 11/63

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