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Add 27/18 and 2/21

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

27/18 + 2/21 is 67/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    27/18 = 27 × 7/18 × 7 = 189/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    2/21 = 2 × 6/21 × 6 = 12/126
  4. Add the two fractions:
    189/126 + 12/126 = 189 + 12/126 = 201/126
  5. 201/126 simplified gives 67/42
  6. So, 27/18 + 2/21 = 67/42
    In mixed form: 125/42

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