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Subtract 1/9 from 6/21

6/21 - 1/9 is 11/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    6/21 = 6 × 3/21 × 3 = 18/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    1/9 = 1 × 7/9 × 7 = 7/63
  4. Subtract the two like fractions:
    18/63 - 7/63 = 18 - 7/63 = 11/63

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