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Add 3/9 and 28/21

1st number: 3/9, 2nd number: 1 7/21

3/9 + 28/21 is 5/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 21 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 9 × 7 = 63,
    3/9 = 3 × 7/9 × 7 = 21/63
  3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
    28/21 = 28 × 3/21 × 3 = 84/63
  4. Add the two like fractions:
    21/63 + 84/63 = 21 + 84/63 = 105/63
  5. 105/63 simplified gives 5/3
  6. So, 3/9 + 28/21 = 5/3
    In mixed form: 12/3

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