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Add 28/81 and 7/9

28/81 + 7/9 is 91/81.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 9 is 81

    Next, find the equivalent fraction of both fractional numbers with denominator 81
  2. For the 1st fraction, since 81 × 1 = 81,
    28/81 = 28 × 1/81 × 1 = 28/81
  3. Likewise, for the 2nd fraction, since 9 × 9 = 81,
    7/9 = 7 × 9/9 × 9 = 63/81
  4. Add the two like fractions:
    28/81 + 63/81 = 28 + 63/81 = 91/81
  5. So, 28/81 + 7/9 = 91/81
    In mixed form: 110/81

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