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Add 3/7 and 7/9

3/7 + 7/9 is 76/63.

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,
    3/7 = 3 × 9/7 × 9 = 27/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    7/9 = 7 × 7/9 × 7 = 49/63
  4. Add the two fractions:
    27/63 + 49/63 = 27 + 49/63 = 76/63
  5. In mixed form: 113/63

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