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Subtract 20/6 from 15/12

1st number: 1 3/12, 2nd number: 3 2/6

15/12 - 20/6 is -25/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 6 is 12
  2. For the 1st fraction, since 12 × 1 = 12,
    15/12 = 15 × 1/12 × 1 = 15/12
  3. Likewise, for the 2nd fraction, since 6 × 2 = 12,
    20/6 = 20 × 2/6 × 2 = 40/12
  4. Subtract the two fractions:
    15/12 - 40/12 = 15 - 40/12 = -25/12

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