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Subtract 3/5 from 10/20

10/20 - 3/5 is -1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 5 is 20
  2. For the 1st fraction, since 20 × 1 = 20,
    10/20 = 10 × 1/20 × 1 = 10/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    3/5 = 3 × 4/5 × 4 = 12/20
  4. Subtract the two fractions:
    10/20 - 12/20 = 10 - 12/20 = -2/20
  5. After reducing the fraction, the answer is -1/10

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