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Add 15/4 and 21/9

1st number: 3 3/4, 2nd number: 2 3/9

15/4 + 21/9 is 73/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 9 is 36
  2. For the 1st fraction, since 4 × 9 = 36,
    15/4 = 15 × 9/4 × 9 = 135/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    21/9 = 21 × 4/9 × 4 = 84/36
  4. Add the two fractions:
    135/36 + 84/36 = 135 + 84/36 = 219/36
  5. After reducing the fraction, the answer is 73/12
  6. In mixed form: 61/12

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