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Add 8/21 and 9/7

1st number: 8/21, 2nd number: 1 2/7

8/21 + 9/7 is 5/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21
  2. For the 1st fraction, since 21 × 1 = 21,
    8/21 = 8 × 1/21 × 1 = 8/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    9/7 = 9 × 3/7 × 3 = 27/21
  4. Add the two fractions:
    8/21 + 27/21 = 8 + 27/21 = 35/21
  5. After reducing the fraction, the answer is 5/3
  6. In mixed form: 12/3

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