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Add 21/4 and 9/3

1st number: 5 1/4, 2nd number: 3 0/3

21/4 + 9/3 is 33/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 3 is 12
  2. For the 1st fraction, since 4 × 3 = 12,
    21/4 = 21 × 3/4 × 3 = 63/12
  3. Likewise, for the 2nd fraction, since 3 × 4 = 12,
    9/3 = 9 × 4/3 × 4 = 36/12
  4. Add the two fractions:
    63/12 + 36/12 = 63 + 36/12 = 99/12
  5. 99/12 simplified gives 33/4
  6. So, 21/4 + 9/3 = 33/4
    In mixed form: 81/4

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