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Add 90/24 and 45/81

1st number: 3 18/24, 2nd number: 45/81

90/24 + 45/81 is 155/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 81 is 648
  2. For the 1st fraction, since 24 × 27 = 648,
    90/24 = 90 × 27/24 × 27 = 2430/648
  3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
    45/81 = 45 × 8/81 × 8 = 360/648
  4. Add the two fractions:
    2430/648 + 360/648 = 2430 + 360/648 = 2790/648
  5. 2790/648 simplified gives 155/36
  6. So, 90/24 + 45/81 = 155/36
    In mixed form: 411/36

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