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Add 12/81 and 5/42

12/81 + 5/42 is 101/378.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 42 is 1134

    Next, find the equivalent fraction of both fractional numbers with denominator 1134
  2. For the 1st fraction, since 81 × 14 = 1134,
    12/81 = 12 × 14/81 × 14 = 168/1134
  3. Likewise, for the 2nd fraction, since 42 × 27 = 1134,
    5/42 = 5 × 27/42 × 27 = 135/1134
  4. Add the two like fractions:
    168/1134 + 135/1134 = 168 + 135/1134 = 303/1134
  5. 303/1134 simplified gives 101/378
  6. So, 12/81 + 5/42 = 101/378

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