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Subtract 3/24 from 18/20

18/20 - 3/24 is 31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 24 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 20 × 6 = 120,
    18/20 = 18 × 6/20 × 6 = 108/120
  3. Likewise, for the 2nd fraction, since 24 × 5 = 120,
    3/24 = 3 × 5/24 × 5 = 15/120
  4. Subtract the two like fractions:
    108/120 - 15/120 = 108 - 15/120 = 93/120
  5. After reducing the fraction, the answer is 31/40

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