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Subtract 3/21 from 63/9

1st number: 7 0/9, 2nd number: 3/21

63/9 - 3/21 is 48/7.

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,
    3/21 = 3 × 3/21 × 3 = 9/63
  4. Subtract the two fractions:
    441/63 - 9/63 = 441 - 9/63 = 432/63
  5. After reducing the fraction, the answer is 48/7
  6. In mixed form: 66/7

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