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Add 9/40 and 5/8

9/40 + 5/8 is 17/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 8 is 40
  2. For the 1st fraction, since 40 × 1 = 40,
    9/40 = 9 × 1/40 × 1 = 9/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    5/8 = 5 × 5/8 × 5 = 25/40
  4. Add the two fractions:
    9/40 + 25/40 = 9 + 25/40 = 34/40
  5. After reducing the fraction, the answer is 17/20

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