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Subtract 15/70 from 3/12

3/12 - 15/70 is 1/28.

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,
    15/70 = 15 × 6/70 × 6 = 90/420
  4. Subtract the two fractions:
    105/420 - 90/420 = 105 - 90/420 = 15/420
  5. After reducing the fraction, the answer is 1/28

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