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Subtract 21/24 from 5/20

5/20 - 21/24 is -5/8.

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,
    5/20 = 5 × 6/20 × 6 = 30/120
  3. Likewise, for the 2nd fraction, since 24 × 5 = 120,
    21/24 = 21 × 5/24 × 5 = 105/120
  4. Subtract the two like fractions:
    30/120 - 105/120 = 30 - 105/120 = -75/120
  5. After reducing the fraction, the answer is -5/8

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