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Add 3/7 and 6/9

3/7 + 6/9 is 23/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    6/9 = 6 × 7/9 × 7 = 42/63
  4. Add the two like fractions:
    27/63 + 42/63 = 27 + 42/63 = 69/63
  5. 69/63 simplified gives 23/21
  6. So, 3/7 + 6/9 = 23/21
    In mixed form: 12/21

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