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Add 3/15 and 28/80

3/15 + 28/80 is 11/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    3/15 = 3 × 16/15 × 16 = 48/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    28/80 = 28 × 3/80 × 3 = 84/240
  4. Add the two like fractions:
    48/240 + 84/240 = 48 + 84/240 = 132/240
  5. 132/240 simplified gives 11/20
  6. So, 3/15 + 28/80 = 11/20

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