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Subtract 2/21 from 7/14

7/14 - 2/21 is 17/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 21 is 42
  2. For the 1st fraction, since 14 × 3 = 42,
    7/14 = 7 × 3/14 × 3 = 21/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    2/21 = 2 × 2/21 × 2 = 4/42
  4. Subtract the two fractions:
    21/42 - 4/42 = 21 - 4/42 = 17/42

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