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Add 84/3 and 21/12

1st number: 28 0/3, 2nd number: 1 9/12

84/3 + 21/12 is 119/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 12 is 12

    Next, find the equivalent fraction of both fractional numbers with denominator 12
  2. For the 1st fraction, since 3 × 4 = 12,
    84/3 = 84 × 4/3 × 4 = 336/12
  3. Likewise, for the 2nd fraction, since 12 × 1 = 12,
    21/12 = 21 × 1/12 × 1 = 21/12
  4. Add the two like fractions:
    336/12 + 21/12 = 336 + 21/12 = 357/12
  5. 357/12 simplified gives 119/4
  6. So, 84/3 + 21/12 = 119/4
    In mixed form: 293/4

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