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Add 3/20 and 8/81

3/20 + 8/81 is 403/1620.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 81 is 1620

    Next, find the equivalent fraction of both fractional numbers with denominator 1620
  2. For the 1st fraction, since 20 × 81 = 1620,
    3/20 = 3 × 81/20 × 81 = 243/1620
  3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
    8/81 = 8 × 20/81 × 20 = 160/1620
  4. Add the two like fractions:
    243/1620 + 160/1620 = 243 + 160/1620 = 403/1620
  5. So, 3/20 + 8/81 = 403/1620

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