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Subtract 12/5 from 5/20

1st number: 5/20, 2nd number: 2 2/5

5/20 - 12/5 is -43/20.

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,
    5/20 = 5 × 1/20 × 1 = 5/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    12/5 = 12 × 4/5 × 4 = 48/20
  4. Subtract the two fractions:
    5/20 - 48/20 = 5 - 48/20 = -43/20

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