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Add 28/3 and 5/21

1st number: 9 1/3, 2nd number: 5/21

28/3 + 5/21 is 67/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 21 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 3 × 7 = 21,
    28/3 = 28 × 7/3 × 7 = 196/21
  3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
    5/21 = 5 × 1/21 × 1 = 5/21
  4. Add the two like fractions:
    196/21 + 5/21 = 196 + 5/21 = 201/21
  5. 201/21 simplified gives 67/7
  6. So, 28/3 + 5/21 = 67/7
    In mixed form: 94/7

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