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Add 54/84 and 5/15

54/84 + 5/15 is 41/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 15 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    54/84 = 54 × 5/84 × 5 = 270/420
  3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
    5/15 = 5 × 28/15 × 28 = 140/420
  4. Add the two like fractions:
    270/420 + 140/420 = 270 + 140/420 = 410/420
  5. 410/420 simplified gives 41/42
  6. So, 54/84 + 5/15 = 41/42

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