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Add 10/20 and 1/81

10/20 + 1/81 is 83/162.

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,
    10/20 = 10 × 81/20 × 81 = 810/1620
  3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
    1/81 = 1 × 20/81 × 20 = 20/1620
  4. Add the two like fractions:
    810/1620 + 20/1620 = 810 + 20/1620 = 830/1620
  5. 830/1620 simplified gives 83/162
  6. So, 10/20 + 1/81 = 83/162

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