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Add 9/15 and 3/8

9/15 + 3/8 is 39/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 8 is 120
  2. For the 1st fraction, since 15 × 8 = 120,
    9/15 = 9 × 8/15 × 8 = 72/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    3/8 = 3 × 15/8 × 15 = 45/120
  4. Add the two fractions:
    72/120 + 45/120 = 72 + 45/120 = 117/120
  5. After reducing the fraction, the answer is 39/40

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