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Add 28/16 and 21/8

1st number: 1 12/16, 2nd number: 2 5/8

28/16 + 21/8 is 35/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 8 is 16

    Next, find the equivalent fraction of both fractional numbers with denominator 16
  2. For the 1st fraction, since 16 × 1 = 16,
    28/16 = 28 × 1/16 × 1 = 28/16
  3. Likewise, for the 2nd fraction, since 8 × 2 = 16,
    21/8 = 21 × 2/8 × 2 = 42/16
  4. Add the two like fractions:
    28/16 + 42/16 = 28 + 42/16 = 70/16
  5. 70/16 simplified gives 35/8
  6. So, 28/16 + 21/8 = 35/8
    In mixed form: 43/8

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