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Add 20/80 and 5/81

20/80 + 5/81 is 101/324.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 81 is 6480

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 80 × 81 = 6480,
    20/80 = 20 × 81/80 × 81 = 1620/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    5/81 = 5 × 80/81 × 80 = 400/6480
  4. Add the two like fractions:
    1620/6480 + 400/6480 = 1620 + 400/6480 = 2020/6480
  5. 2020/6480 simplified gives 101/324
  6. So, 20/80 + 5/81 = 101/324

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