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Subtract 15/20 from 10/14

10/14 - 15/20 is -1/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 20 is 140
  2. For the 1st fraction, since 14 × 10 = 140,
    10/14 = 10 × 10/14 × 10 = 100/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  4. Subtract the two fractions:
    100/140 - 105/140 = 100 - 105/140 = -5/140
  5. After reducing the fraction, the answer is -1/28

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