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Add 7/21 and 12/9

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

7/21 + 12/9 is 5/3.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    7/21 = 7 × 3/21 × 3 = 21/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    12/9 = 12 × 7/9 × 7 = 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, 7/21 + 12/9 = 5/3
    In mixed form: 12/3

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