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Subtract 4/21 from 35/2

1st number: 17 1/2, 2nd number: 4/21

35/2 - 4/21 is 727/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 21 is 42
  2. For the 1st fraction, since 2 × 21 = 42,
    35/2 = 35 × 21/2 × 21 = 735/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    4/21 = 4 × 2/21 × 2 = 8/42
  4. Subtract the two fractions:
    735/42 - 8/42 = 735 - 8/42 = 727/42
  5. In mixed form: 1713/42

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