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Add 28/15 and 84/18

1st number: 1 13/15, 2nd number: 4 12/18

28/15 + 84/18 is 98/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    28/15 = 28 × 6/15 × 6 = 168/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    84/18 = 84 × 5/18 × 5 = 420/90
  4. Add the two fractions:
    168/90 + 420/90 = 168 + 420/90 = 588/90
  5. 588/90 simplified gives 98/15
  6. So, 28/15 + 84/18 = 98/15
    In mixed form: 68/15

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