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Add 42/60 and 5/81

42/60 + 5/81 is 617/810.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 81 is 1620
  2. For the 1st fraction, since 60 × 27 = 1620,
    42/60 = 42 × 27/60 × 27 = 1134/1620
  3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
    5/81 = 5 × 20/81 × 20 = 100/1620
  4. Add the two fractions:
    1134/1620 + 100/1620 = 1134 + 100/1620 = 1234/1620
  5. 1234/1620 simplified gives 617/810
  6. So, 42/60 + 5/81 = 617/810

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