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Add 3/12 and 45/20

1st number: 3/12, 2nd number: 2 5/20

3/12 + 45/20 is 5/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 20 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    3/12 = 3 × 5/12 × 5 = 15/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    45/20 = 45 × 3/20 × 3 = 135/60
  4. Add the two like fractions:
    15/60 + 135/60 = 15 + 135/60 = 150/60
  5. 150/60 simplified gives 5/2
  6. So, 3/12 + 45/20 = 5/2
    In mixed form: 21/2

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