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Subtract 15/25 from 10/20

10/20 - 15/25 is -1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 25 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    10/20 = 10 × 5/20 × 5 = 50/100
  3. Likewise, for the 2nd fraction, since 25 × 4 = 100,
    15/25 = 15 × 4/25 × 4 = 60/100
  4. Subtract the two like fractions:
    50/100 - 60/100 = 50 - 60/100 = -10/100
  5. After reducing the fraction, the answer is -1/10

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