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Add 18/4 and 9/84

1st number: 4 2/4, 2nd number: 9/84

18/4 + 9/84 is 129/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 84 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    18/4 = 18 × 21/4 × 21 = 378/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    9/84 = 9 × 1/84 × 1 = 9/84
  4. Add the two like fractions:
    378/84 + 9/84 = 378 + 9/84 = 387/84
  5. 387/84 simplified gives 129/28
  6. So, 18/4 + 9/84 = 129/28
    In mixed form: 417/28

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