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Add 15/20 and 75/80

15/20 + 75/80 is 27/16.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 20 × 4 = 80,
    15/20 = 15 × 4/20 × 4 = 60/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    75/80 = 75 × 1/80 × 1 = 75/80
  4. Add the two like fractions:
    60/80 + 75/80 = 60 + 75/80 = 135/80
  5. 135/80 simplified gives 27/16
  6. So, 15/20 + 75/80 = 27/16
    In mixed form: 111/16

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