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Subtract 10/21 from 63/9

1st number: 7 0/9, 2nd number: 10/21

63/9 - 10/21 is 137/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 21 is 63
  2. For the 1st fraction, since 9 × 7 = 63,
    63/9 = 63 × 7/9 × 7 = 441/63
  3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
    10/21 = 10 × 3/21 × 3 = 30/63
  4. Subtract the two fractions:
    441/63 - 30/63 = 441 - 30/63 = 411/63
  5. After reducing the fraction, the answer is 137/21
  6. In mixed form: 611/21

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