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Add 28/40 and 9/60

28/40 + 9/60 is 17/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 60 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    28/40 = 28 × 3/40 × 3 = 84/120
  3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
    9/60 = 9 × 2/60 × 2 = 18/120
  4. Add the two fractions:
    84/120 + 18/120 = 84 + 18/120 = 102/120
  5. 102/120 simplified gives 17/20
  6. So, 28/40 + 9/60 = 17/20

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