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Add 1/81 and 1/20

1/81 + 1/20 is 101/1620.

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,
    1/81 = 1 × 20/81 × 20 = 20/1620
  3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
    1/20 = 1 × 81/20 × 81 = 81/1620
  4. Add the two like fractions:
    20/1620 + 81/1620 = 20 + 81/1620 = 101/1620
  5. So, 1/81 + 1/20 = 101/1620

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