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Add 20/3 and 9/7

1st number: 6 2/3, 2nd number: 1 2/7

20/3 + 9/7 is 167/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 is 21
  2. For the 1st fraction, since 3 × 7 = 21,
    20/3 = 20 × 7/3 × 7 = 140/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    9/7 = 9 × 3/7 × 3 = 27/21
  4. Add the two fractions:
    140/21 + 27/21 = 140 + 27/21 = 167/21
  5. In mixed form: 720/21

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