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Add 4/5 and 3/81

4/5 + 3/81 is 113/135.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 5 × 81 = 405,
    4/5 = 4 × 81/5 × 81 = 324/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    3/81 = 3 × 5/81 × 5 = 15/405
  4. Add the two like fractions:
    324/405 + 15/405 = 324 + 15/405 = 339/405
  5. 339/405 simplified gives 113/135
  6. So, 4/5 + 3/81 = 113/135

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