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Subtract 2/7 from 21/14

1st number: 1 7/14, 2nd number: 2/7

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

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 7 is 14
  2. For the 1st fraction, since 14 × 1 = 14,
    21/14 = 21 × 1/14 × 1 = 21/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    2/7 = 2 × 2/7 × 2 = 4/14
  4. Subtract the two fractions:
    21/14 - 4/14 = 21 - 4/14 = 17/14
  5. In mixed form: 13/14

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