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Add 42/45 and 3/9

42/45 + 3/9 is 19/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 9 is 45
  2. For the 1st fraction, since 45 × 1 = 45,
    42/45 = 42 × 1/45 × 1 = 42/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    3/9 = 3 × 5/9 × 5 = 15/45
  4. Add the two fractions:
    42/45 + 15/45 = 42 + 15/45 = 57/45
  5. After reducing the fraction, the answer is 19/15
  6. In mixed form: 14/15

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