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Add 18/7 and 15/9

1st number: 2 4/7, 2nd number: 1 6/9

18/7 + 15/9 is 89/21.

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,
    18/7 = 18 × 9/7 × 9 = 162/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    15/9 = 15 × 7/9 × 7 = 105/63
  4. Add the two fractions:
    162/63 + 105/63 = 162 + 105/63 = 267/63
  5. After reducing the fraction, the answer is 89/21
  6. In mixed form: 45/21

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