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Add 5/45 and 20/81

5/45 + 20/81 is 29/81.

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,
    5/45 = 5 × 9/45 × 9 = 45/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    20/81 = 20 × 5/81 × 5 = 100/405
  4. Add the two like fractions:
    45/405 + 100/405 = 45 + 100/405 = 145/405
  5. 145/405 simplified gives 29/81
  6. So, 5/45 + 20/81 = 29/81

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