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Add 28/16 and 42/20

1st number: 1 12/16, 2nd number: 2 2/20

28/16 + 42/20 is 77/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 20 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    28/16 = 28 × 5/16 × 5 = 140/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    42/20 = 42 × 4/20 × 4 = 168/80
  4. Add the two like fractions:
    140/80 + 168/80 = 140 + 168/80 = 308/80
  5. 308/80 simplified gives 77/20
  6. So, 28/16 + 42/20 = 77/20
    In mixed form: 317/20

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