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Add 28/15 and 21/16

1st number: 1 13/15, 2nd number: 1 5/16

28/15 + 21/16 is 763/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 16 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    28/15 = 28 × 16/15 × 16 = 448/240
  3. Likewise, for the 2nd fraction, since 16 × 15 = 240,
    21/16 = 21 × 15/16 × 15 = 315/240
  4. Add the two like fractions:
    448/240 + 315/240 = 448 + 315/240 = 763/240
  5. So, 28/15 + 21/16 = 763/240
    In mixed form: 343/240

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