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Subtract 5/28 from 12/15

12/15 - 5/28 is 87/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 28 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    12/15 = 12 × 28/15 × 28 = 336/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    5/28 = 5 × 15/28 × 15 = 75/420
  4. Subtract the two like fractions:
    336/420 - 75/420 = 336 - 75/420 = 261/420
  5. After reducing the fraction, the answer is 87/140

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