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Subtract 9/21 from 21/3

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

21/3 - 9/21 is 46/7.

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,
    21/3 = 21 × 7/3 × 7 = 147/21
  3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
    9/21 = 9 × 1/21 × 1 = 9/21
  4. Subtract the two fractions:
    147/21 - 9/21 = 147 - 9/21 = 138/21
  5. After reducing the fraction, the answer is 46/7
  6. In mixed form: 64/7

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