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Add 30/81 and 3/20

30/81 + 3/20 is 281/540.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1620
  2. For the 1st fraction, since 81 × 20 = 1620,
    30/81 = 30 × 20/81 × 20 = 600/1620
  3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
    3/20 = 3 × 81/20 × 81 = 243/1620
  4. Add the two like fractions:
    600/1620 + 243/1620 = 600 + 243/1620 = 843/1620
  5. 843/1620 simplified gives 281/540
  6. So, 30/81 + 3/20 = 281/540

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