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Add 84/15 and 15/12

1st number: 5 9/15, 2nd number: 1 3/12

84/15 + 15/12 is 137/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    84/15 = 84 × 4/15 × 4 = 336/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    15/12 = 15 × 5/12 × 5 = 75/60
  4. Add the two fractions:
    336/60 + 75/60 = 336 + 75/60 = 411/60
  5. After reducing the fraction, the answer is 137/20
  6. In mixed form: 617/20

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