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Add 45/12 and 15/90

1st number: 3 9/12, 2nd number: 15/90

45/12 + 15/90 is 47/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180
  2. For the 1st fraction, since 12 × 15 = 180,
    45/12 = 45 × 15/12 × 15 = 675/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    15/90 = 15 × 2/90 × 2 = 30/180
  4. Add the two fractions:
    675/180 + 30/180 = 675 + 30/180 = 705/180
  5. After reducing the fraction, the answer is 47/12
  6. In mixed form: 311/12

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