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Add 28/35 and 40/60

28/35 + 40/60 is 22/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 60 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 35 × 12 = 420,
    28/35 = 28 × 12/35 × 12 = 336/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    40/60 = 40 × 7/60 × 7 = 280/420
  4. Add the two like fractions:
    336/420 + 280/420 = 336 + 280/420 = 616/420
  5. 616/420 simplified gives 22/15
  6. So, 28/35 + 40/60 = 22/15
    In mixed form: 17/15

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