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Add 28/35 and 42/81

28/35 + 42/81 is 178/135.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 81 is 2835

    Next, find the equivalent fraction of both fractional numbers with denominator 2835
  2. For the 1st fraction, since 35 × 81 = 2835,
    28/35 = 28 × 81/35 × 81 = 2268/2835
  3. Likewise, for the 2nd fraction, since 81 × 35 = 2835,
    42/81 = 42 × 35/81 × 35 = 1470/2835
  4. Add the two like fractions:
    2268/2835 + 1470/2835 = 2268 + 1470/2835 = 3738/2835
  5. 3738/2835 simplified gives 178/135
  6. So, 28/35 + 42/81 = 178/135
    In mixed form: 143/135

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