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Subtract 4/10 from 5/20

5/20 - 4/10 is -3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 10 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 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 10 × 2 = 20,
    4/10 = 4 × 2/10 × 2 = 8/20
  4. Subtract the two like fractions:
    5/20 - 8/20 = 5 - 8/20 = -3/20

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