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Subtract 2/5 from 6/20

6/20 - 2/5 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,
    6/20 = 6 × 1/20 × 1 = 6/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    2/5 = 2 × 4/5 × 4 = 8/20
  4. Subtract the two fractions:
    6/20 - 8/20 = 6 - 8/20 = -2/20
  5. After reducing the fraction, the answer is -1/10

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