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Add 18/81 and 10/15

18/81 + 10/15 is 8/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 15 is 405
  2. For the 1st fraction, since 81 × 5 = 405,
    18/81 = 18 × 5/81 × 5 = 90/405
  3. Likewise, for the 2nd fraction, since 15 × 27 = 405,
    10/15 = 10 × 27/15 × 27 = 270/405
  4. Add the two fractions:
    90/405 + 270/405 = 90 + 270/405 = 360/405
  5. 360/405 simplified gives 8/9
  6. So, 18/81 + 10/15 = 8/9

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