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Add 16/12 and 3/21

1st number: 1 4/12, 2nd number: 3/21

16/12 + 3/21 is 31/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    16/12 = 16 × 7/12 × 7 = 112/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    3/21 = 3 × 4/21 × 4 = 12/84
  4. Add the two fractions:
    112/84 + 12/84 = 112 + 12/84 = 124/84
  5. After reducing the fraction, the answer is 31/21
  6. In mixed form: 110/21

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