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Subtract 4/5 from 3/12

3/12 - 4/5 is -11/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 5 is 60
  2. For the 1st fraction, since 12 × 5 = 60,
    3/12 = 3 × 5/12 × 5 = 15/60
  3. Likewise, for the 2nd fraction, since 5 × 12 = 60,
    4/5 = 4 × 12/5 × 12 = 48/60
  4. Subtract the two fractions:
    15/60 - 48/60 = 15 - 48/60 = -33/60
  5. After reducing the fraction, the answer is -11/20

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