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Add 15/81 and 60/72

15/81 + 60/72 is 55/54.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 72 is 648

    Next, find the equivalent fraction of both fractional numbers with denominator 648
  2. For the 1st fraction, since 81 × 8 = 648,
    15/81 = 15 × 8/81 × 8 = 120/648
  3. Likewise, for the 2nd fraction, since 72 × 9 = 648,
    60/72 = 60 × 9/72 × 9 = 540/648
  4. Add the two like fractions:
    120/648 + 540/648 = 120 + 540/648 = 660/648
  5. 660/648 simplified gives 55/54
  6. So, 15/81 + 60/72 = 55/54
    In mixed form: 11/54

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