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Add 15/54 and 3/42

15/54 + 3/42 is 22/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 42 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 54 × 7 = 378,
    15/54 = 15 × 7/54 × 7 = 105/378
  3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
    3/42 = 3 × 9/42 × 9 = 27/378
  4. Add the two like fractions:
    105/378 + 27/378 = 105 + 27/378 = 132/378
  5. 132/378 simplified gives 22/63
  6. So, 15/54 + 3/42 = 22/63

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