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Add 84/18 and 30/42

1st number: 4 12/18, 2nd number: 30/42

84/18 + 30/42 is 113/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    84/18 = 84 × 7/18 × 7 = 588/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    30/42 = 30 × 3/42 × 3 = 90/126
  4. Add the two like fractions:
    588/126 + 90/126 = 588 + 90/126 = 678/126
  5. 678/126 simplified gives 113/21
  6. So, 84/18 + 30/42 = 113/21
    In mixed form: 58/21

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