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Add 27/18 and 90/81

1st number: 1 9/18, 2nd number: 1 9/81

27/18 + 90/81 is 47/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 81 is 162

    Next, find the equivalent fraction of both fractional numbers with denominator 162
  2. For the 1st fraction, since 18 × 9 = 162,
    27/18 = 27 × 9/18 × 9 = 243/162
  3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
    90/81 = 90 × 2/81 × 2 = 180/162
  4. Add the two like fractions:
    243/162 + 180/162 = 243 + 180/162 = 423/162
  5. 423/162 simplified gives 47/18
  6. So, 27/18 + 90/81 = 47/18
    In mixed form: 211/18

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