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Add 28/15 and 42/54

1st number: 1 13/15, 2nd number: 42/54

28/15 + 42/54 is 119/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 54 is 270
  2. For the 1st fraction, since 15 × 18 = 270,
    28/15 = 28 × 18/15 × 18 = 504/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    42/54 = 42 × 5/54 × 5 = 210/270
  4. Add the two fractions:
    504/270 + 210/270 = 504 + 210/270 = 714/270
  5. 714/270 simplified gives 119/45
  6. So, 28/15 + 42/54 = 119/45
    In mixed form: 229/45

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