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Add 5/15 and 80/81

5/15 + 80/81 is 107/81.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 15 × 27 = 405,
    5/15 = 5 × 27/15 × 27 = 135/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    80/81 = 80 × 5/81 × 5 = 400/405
  4. Add the two like fractions:
    135/405 + 400/405 = 135 + 400/405 = 535/405
  5. 535/405 simplified gives 107/81
  6. So, 5/15 + 80/81 = 107/81
    In mixed form: 126/81

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