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Add 28/21 and 16/15

1st number: 1 7/21, 2nd number: 1 1/15

28/21 + 16/15 is 12/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 15 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    28/21 = 28 × 5/21 × 5 = 140/105
  3. Likewise, for the 2nd fraction, since 15 × 7 = 105,
    16/15 = 16 × 7/15 × 7 = 112/105
  4. Add the two like fractions:
    140/105 + 112/105 = 140 + 112/105 = 252/105
  5. 252/105 simplified gives 12/5
  6. So, 28/21 + 16/15 = 12/5
    In mixed form: 22/5

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