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Add 28/80 and 9/45

28/80 + 9/45 is 11/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 45 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    28/80 = 28 × 9/80 × 9 = 252/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    9/45 = 9 × 16/45 × 16 = 144/720
  4. Add the two like fractions:
    252/720 + 144/720 = 252 + 144/720 = 396/720
  5. 396/720 simplified gives 11/20
  6. So, 28/80 + 9/45 = 11/20

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