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Add 4/9 and 5/20

4/9 + 5/20 is 25/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180
  2. For the 1st fraction, since 9 × 20 = 180,
    4/9 = 4 × 20/9 × 20 = 80/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    5/20 = 5 × 9/20 × 9 = 45/180
  4. Add the two fractions:
    80/180 + 45/180 = 80 + 45/180 = 125/180
  5. After reducing the fraction, the answer is 25/36

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