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Subtract 15/18 from 6/15

6/15 - 15/18 is -13/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    6/15 = 6 × 6/15 × 6 = 36/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    15/18 = 15 × 5/18 × 5 = 75/90
  4. Subtract the two fractions:
    36/90 - 75/90 = 36 - 75/90 = -39/90
  5. After reducing the fraction, the answer is -13/30

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