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Add 15/80 and 5/40

15/80 + 5/40 is 5/16.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    15/80 = 15 × 1/80 × 1 = 15/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    5/40 = 5 × 2/40 × 2 = 10/80
  4. Add the two like fractions:
    15/80 + 10/80 = 15 + 10/80 = 25/80
  5. 25/80 simplified gives 5/16
  6. So, 15/80 + 5/40 = 5/16

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