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Subtract 3/9 from 4/5

4/5 - 3/9 is 7/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 9 is 45
  2. For the 1st fraction, since 5 × 9 = 45,
    4/5 = 4 × 9/5 × 9 = 36/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    3/9 = 3 × 5/9 × 5 = 15/45
  4. Subtract the two fractions:
    36/45 - 15/45 = 36 - 15/45 = 21/45
  5. After reducing the fraction, the answer is 7/15

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