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Add 15/40 and 81/8

1st number: 15/40, 2nd number: 10 1/8

15/40 + 81/8 is 21/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 8 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 40 × 1 = 40,
    15/40 = 15 × 1/40 × 1 = 15/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    81/8 = 81 × 5/8 × 5 = 405/40
  4. Add the two like fractions:
    15/40 + 405/40 = 15 + 405/40 = 420/40
  5. 420/40 simplified gives 21/2
  6. So, 15/40 + 81/8 = 21/2
    In mixed form: 101/2

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