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Subtract 7/9 from 9/15

9/15 - 7/9 is -8/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 9 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 9 × 5 = 45,
    7/9 = 7 × 5/9 × 5 = 35/45
  4. Subtract the two fractions:
    27/45 - 35/45 = 27 - 35/45 = -8/45

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