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Add 8/80 and 18/81

8/80 + 18/81 is 29/90.

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,
    8/80 = 8 × 81/80 × 81 = 648/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    18/81 = 18 × 80/81 × 80 = 1440/6480
  4. Add the two like fractions:
    648/6480 + 1440/6480 = 648 + 1440/6480 = 2088/6480
  5. 2088/6480 simplified gives 29/90
  6. So, 8/80 + 18/81 = 29/90

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