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Subtract 12/40 from 4/12

4/12 - 12/40 is 1/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120
  2. For the 1st fraction, since 12 × 10 = 120,
    4/12 = 4 × 10/12 × 10 = 40/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    12/40 = 12 × 3/40 × 3 = 36/120
  4. Subtract the two fractions:
    40/120 - 36/120 = 40 - 36/120 = 4/120
  5. After reducing the fraction, the answer is 1/30

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