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Add 63/42 and 15/81

1st number: 1 21/42, 2nd number: 15/81

63/42 + 15/81 is 91/54.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1134
  2. For the 1st fraction, since 42 × 27 = 1134,
    63/42 = 63 × 27/42 × 27 = 1701/1134
  3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
    15/81 = 15 × 14/81 × 14 = 210/1134
  4. Add the two like fractions:
    1701/1134 + 210/1134 = 1701 + 210/1134 = 1911/1134
  5. 1911/1134 simplified gives 91/54
  6. So, 63/42 + 15/81 = 91/54
    In mixed form: 137/54

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