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Add 28/15 and 70/42

1st number: 1 13/15, 2nd number: 1 28/42

28/15 + 70/42 is 53/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210
  2. For the 1st fraction, since 15 × 14 = 210,
    28/15 = 28 × 14/15 × 14 = 392/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    70/42 = 70 × 5/42 × 5 = 350/210
  4. Add the two fractions:
    392/210 + 350/210 = 392 + 350/210 = 742/210
  5. 742/210 simplified gives 53/15
  6. So, 28/15 + 70/42 = 53/15
    In mixed form: 38/15

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