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Add 5/12 and 21/81

5/12 + 21/81 is 73/108.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 81 is 324

    Next, find the equivalent fraction of both fractional numbers with denominator 324
  2. For the 1st fraction, since 12 × 27 = 324,
    5/12 = 5 × 27/12 × 27 = 135/324
  3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
    21/81 = 21 × 4/81 × 4 = 84/324
  4. Add the two like fractions:
    135/324 + 84/324 = 135 + 84/324 = 219/324
  5. 219/324 simplified gives 73/108
  6. So, 5/12 + 21/81 = 73/108

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