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Add 81/30 and 27/18

1st number: 2 21/30, 2nd number: 1 9/18

81/30 + 27/18 is 21/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    81/30 = 81 × 3/30 × 3 = 243/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    27/18 = 27 × 5/18 × 5 = 135/90
  4. Add the two like fractions:
    243/90 + 135/90 = 243 + 135/90 = 378/90
  5. 378/90 simplified gives 21/5
  6. So, 81/30 + 27/18 = 21/5
    In mixed form: 41/5

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