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Add 21/14 and 9/7

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

21/14 + 9/7 is 39/14.

Steps for adding 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,
    9/7 = 9 × 2/7 × 2 = 18/14
  4. Add the two fractions:
    21/14 + 18/14 = 21 + 18/14 = 39/14
  5. In mixed form: 211/14

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