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Subtract 3/15 from 12/28

12/28 - 3/15 is 8/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 15 is 420
  2. For the 1st fraction, since 28 × 15 = 420,
    12/28 = 12 × 15/28 × 15 = 180/420
  3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
    3/15 = 3 × 28/15 × 28 = 84/420
  4. Subtract the two fractions:
    180/420 - 84/420 = 180 - 84/420 = 96/420
  5. After reducing the fraction, the answer is 8/35

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