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Add 21/3 and 81/4

1st number: 7 0/3, 2nd number: 20 1/4

21/3 + 81/4 is 109/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 4 is 12
  2. For the 1st fraction, since 3 × 4 = 12,
    21/3 = 21 × 4/3 × 4 = 84/12
  3. Likewise, for the 2nd fraction, since 4 × 3 = 12,
    81/4 = 81 × 3/4 × 3 = 243/12
  4. Add the two fractions:
    84/12 + 243/12 = 84 + 243/12 = 327/12
  5. 327/12 simplified gives 109/4
  6. So, 21/3 + 81/4 = 109/4
    In mixed form: 271/4

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