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Subtract 3/9 from 1/12

1/12 - 3/9 is -1/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 9 is 36
  2. For the 1st fraction, since 12 × 3 = 36,
    1/12 = 1 × 3/12 × 3 = 3/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    3/9 = 3 × 4/9 × 4 = 12/36
  4. Subtract the two fractions:
    3/36 - 12/36 = 3 - 12/36 = -9/36
  5. After reducing the fraction, the answer is -1/4

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