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Add 81/4 and 28/5

1st number: 20 1/4, 2nd number: 5 3/5

81/4 + 28/5 is 517/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    81/4 = 81 × 5/4 × 5 = 405/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    28/5 = 28 × 4/5 × 4 = 112/20
  4. Add the two like fractions:
    405/20 + 112/20 = 405 + 112/20 = 517/20
  5. So, 81/4 + 28/5 = 517/20
    In mixed form: 2517/20

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