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Subtract 18/24 from 3/20

3/20 - 18/24 is -3/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 24 is 120
  2. For the 1st fraction, since 20 × 6 = 120,
    3/20 = 3 × 6/20 × 6 = 18/120
  3. Likewise, for the 2nd fraction, since 24 × 5 = 120,
    18/24 = 18 × 5/24 × 5 = 90/120
  4. Subtract the two fractions:
    18/120 - 90/120 = 18 - 90/120 = -72/120
  5. After reducing the fraction, the answer is -3/5

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