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Add 81/4 and 5/15

1st number: 20 1/4, 2nd number: 5/15

81/4 + 5/15 is 247/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 15 is 60
  2. For the 1st fraction, since 4 × 15 = 60,
    81/4 = 81 × 15/4 × 15 = 1215/60
  3. Likewise, for the 2nd fraction, since 15 × 4 = 60,
    5/15 = 5 × 4/15 × 4 = 20/60
  4. Add the two fractions:
    1215/60 + 20/60 = 1215 + 20/60 = 1235/60
  5. After reducing the fraction, the answer is 247/12
  6. In mixed form: 207/12

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