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Add 20/45 and 12/81

20/45 + 12/81 is 16/27.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 45 × 9 = 405,
    20/45 = 20 × 9/45 × 9 = 180/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    12/81 = 12 × 5/81 × 5 = 60/405
  4. Add the two like fractions:
    180/405 + 60/405 = 180 + 60/405 = 240/405
  5. 240/405 simplified gives 16/27
  6. So, 20/45 + 12/81 = 16/27

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