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Add 15/12 and 20/5

1st number: 1 3/12, 2nd number: 4 0/5

15/12 + 20/5 is 21/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 5 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    15/12 = 15 × 5/12 × 5 = 75/60
  3. Likewise, for the 2nd fraction, since 5 × 12 = 60,
    20/5 = 20 × 12/5 × 12 = 240/60
  4. Add the two like fractions:
    75/60 + 240/60 = 75 + 240/60 = 315/60
  5. 315/60 simplified gives 21/4
  6. So, 15/12 + 20/5 = 21/4
    In mixed form: 51/4

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