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Subtract 3/12 from 2/5

2/5 - 3/12 is 3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 12 is 60
  2. For the 1st fraction, since 5 × 12 = 60,
    2/5 = 2 × 12/5 × 12 = 24/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    3/12 = 3 × 5/12 × 5 = 15/60
  4. Subtract the two fractions:
    24/60 - 15/60 = 24 - 15/60 = 9/60
  5. After reducing the fraction, the answer is 3/20

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