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Add 42/2 and 15/12

1st number: 21 0/2, 2nd number: 1 3/12

42/2 + 15/12 is 89/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 12 is 12
  2. For the 1st fraction, since 2 × 6 = 12,
    42/2 = 42 × 6/2 × 6 = 252/12
  3. Likewise, for the 2nd fraction, since 12 × 1 = 12,
    15/12 = 15 × 1/12 × 1 = 15/12
  4. Add the two fractions:
    252/12 + 15/12 = 252 + 15/12 = 267/12
  5. After reducing the fraction, the answer is 89/4
  6. In mixed form: 221/4

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