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Add 28/56 and 4/80

28/56 + 4/80 is 11/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 56 × 10 = 560,
    28/56 = 28 × 10/56 × 10 = 280/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    4/80 = 4 × 7/80 × 7 = 28/560
  4. Add the two like fractions:
    280/560 + 28/560 = 280 + 28/560 = 308/560
  5. 308/560 simplified gives 11/20
  6. So, 28/56 + 4/80 = 11/20

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