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Add 81/15 and 18/90

1st number: 5 6/15, 2nd number: 18/90

81/15 + 18/90 is 28/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 90 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    81/15 = 81 × 6/15 × 6 = 486/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    18/90 = 18 × 1/90 × 1 = 18/90
  4. Add the two fractions:
    486/90 + 18/90 = 486 + 18/90 = 504/90
  5. 504/90 simplified gives 28/5
  6. So, 81/15 + 18/90 = 28/5
    In mixed form: 53/5

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