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Add 9/7 and 12/9

1st number: 1 2/7, 2nd number: 1 3/9

9/7 + 12/9 is 55/21.

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,
    9/7 = 9 × 9/7 × 9 = 81/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    12/9 = 12 × 7/9 × 7 = 84/63
  4. Add the two fractions:
    81/63 + 84/63 = 81 + 84/63 = 165/63
  5. 165/63 simplified gives 55/21
  6. So, 9/7 + 12/9 = 55/21
    In mixed form: 213/21

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