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Subtract 45/12 from 4/15

1st number: 4/15, 2nd number: 3 9/12

4/15 - 45/12 is -209/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    4/15 = 4 × 4/15 × 4 = 16/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    45/12 = 45 × 5/12 × 5 = 225/60
  4. Subtract the two fractions:
    16/60 - 225/60 = 16 - 225/60 = -209/60

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