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Add 1/20 and 28/15

1st number: 1/20, 2nd number: 1 13/15

1/20 + 28/15 is 23/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 15 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 20 × 3 = 60,
    1/20 = 1 × 3/20 × 3 = 3/60
  3. Likewise, for the 2nd fraction, since 15 × 4 = 60,
    28/15 = 28 × 4/15 × 4 = 112/60
  4. Add the two like fractions:
    3/60 + 112/60 = 3 + 112/60 = 115/60
  5. 115/60 simplified gives 23/12
  6. So, 1/20 + 28/15 = 23/12
    In mixed form: 111/12

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