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Add 12/15 and 45/12

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

12/15 + 45/12 is 91/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 15 × 4 = 60,
    12/15 = 12 × 4/15 × 4 = 48/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    45/12 = 45 × 5/12 × 5 = 225/60
  4. Add the two like fractions:
    48/60 + 225/60 = 48 + 225/60 = 273/60
  5. 273/60 simplified gives 91/20
  6. So, 12/15 + 45/12 = 91/20
    In mixed form: 411/20

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