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Subtract 15/20 from 1/5

1/5 - 15/20 is -11/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 20 is 20
  2. For the 1st fraction, since 5 × 4 = 20,
    1/5 = 1 × 4/5 × 4 = 4/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    15/20 = 15 × 1/20 × 1 = 15/20
  4. Subtract the two fractions:
    4/20 - 15/20 = 4 - 15/20 = -11/20

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