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Subtract 25/70 from 3/12

3/12 - 25/70 is -3/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 70 is 420
  2. For the 1st fraction, since 12 × 35 = 420,
    3/12 = 3 × 35/12 × 35 = 105/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    25/70 = 25 × 6/70 × 6 = 150/420
  4. Subtract the two fractions:
    105/420 - 150/420 = 105 - 150/420 = -45/420
  5. After reducing the fraction, the answer is -3/28

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