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Add 15/40 and 81/16

1st number: 15/40, 2nd number: 5 1/16

15/40 + 81/16 is 87/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 40 × 2 = 80,
    15/40 = 15 × 2/40 × 2 = 30/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    81/16 = 81 × 5/16 × 5 = 405/80
  4. Add the two like fractions:
    30/80 + 405/80 = 30 + 405/80 = 435/80
  5. 435/80 simplified gives 87/16
  6. So, 15/40 + 81/16 = 87/16
    In mixed form: 57/16

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