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Add 42/49 and 15/90

42/49 + 15/90 is 43/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 90 is 4410
  2. For the 1st fraction, since 49 × 90 = 4410,
    42/49 = 42 × 90/49 × 90 = 3780/4410
  3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
    15/90 = 15 × 49/90 × 49 = 735/4410
  4. Add the two fractions:
    3780/4410 + 735/4410 = 3780 + 735/4410 = 4515/4410
  5. After reducing the fraction, the answer is 43/42
  6. In mixed form: 11/42

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