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Add 16/21 and 84/18

1st number: 16/21, 2nd number: 4 12/18

16/21 + 84/18 is 38/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 21 × 6 = 126,
    16/21 = 16 × 6/21 × 6 = 96/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    84/18 = 84 × 7/18 × 7 = 588/126
  4. Add the two like fractions:
    96/126 + 588/126 = 96 + 588/126 = 684/126
  5. 684/126 simplified gives 38/7
  6. So, 16/21 + 84/18 = 38/7
    In mixed form: 53/7

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