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Add 6/7 and 3/9

6/7 + 3/9 is 25/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63
  2. For the 1st fraction, since 7 × 9 = 63,
    6/7 = 6 × 9/7 × 9 = 54/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    3/9 = 3 × 7/9 × 7 = 21/63
  4. Add the two fractions:
    54/63 + 21/63 = 54 + 21/63 = 75/63
  5. After reducing the fraction, the answer is 25/21
  6. In mixed form: 14/21

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