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Add 28/80 and 35/40

28/80 + 35/40 is 49/40.

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,
    28/80 = 28 × 1/80 × 1 = 28/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    35/40 = 35 × 2/40 × 2 = 70/80
  4. Add the two like fractions:
    28/80 + 70/80 = 28 + 70/80 = 98/80
  5. 98/80 simplified gives 49/40
  6. So, 28/80 + 35/40 = 49/40
    In mixed form: 19/40

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