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Add 9/15 and 12/45

9/15 + 12/45 is 13/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 45 is 45
  2. For the 1st fraction, since 15 × 3 = 45,
    9/15 = 9 × 3/15 × 3 = 27/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    12/45 = 12 × 1/45 × 1 = 12/45
  4. Add the two fractions:
    27/45 + 12/45 = 27 + 12/45 = 39/45
  5. After reducing the fraction, the answer is 13/15

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