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Add 5/4 and 21/9

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

5/4 + 21/9 is 43/12.

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,
    5/4 = 5 × 9/4 × 9 = 45/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    21/9 = 21 × 4/9 × 4 = 84/36
  4. Add the two fractions:
    45/36 + 84/36 = 45 + 84/36 = 129/36
  5. 129/36 simplified gives 43/12
  6. So, 5/4 + 21/9 = 43/12
    In mixed form: 37/12

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