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Subtract 28/35 from 5/15

5/15 - 28/35 is -7/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 35 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    5/15 = 5 × 7/15 × 7 = 35/105
  3. Likewise, for the 2nd fraction, since 35 × 3 = 105,
    28/35 = 28 × 3/35 × 3 = 84/105
  4. Subtract the two like fractions:
    35/105 - 84/105 = 35 - 84/105 = -49/105
  5. After reducing the fraction, the answer is -7/15

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