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Add 28/84 and 30/42

28/84 + 30/42 is 22/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 42 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    28/84 = 28 × 1/84 × 1 = 28/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    30/42 = 30 × 2/42 × 2 = 60/84
  4. Add the two fractions:
    28/84 + 60/84 = 28 + 60/84 = 88/84
  5. After reducing the fraction, the answer is 22/21
  6. In mixed form: 11/21

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