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Add 28/70 and 54/84

28/70 + 54/84 is 73/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 70 × 6 = 420,
    28/70 = 28 × 6/70 × 6 = 168/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    54/84 = 54 × 5/84 × 5 = 270/420
  4. Add the two like fractions:
    168/420 + 270/420 = 168 + 270/420 = 438/420
  5. 438/420 simplified gives 73/70
  6. So, 28/70 + 54/84 = 73/70
    In mixed form: 13/70

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