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Subtract 4/20 from 4/54

4/54 - 4/20 is -17/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 54 × 10 = 540,
    4/54 = 4 × 10/54 × 10 = 40/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    4/20 = 4 × 27/20 × 27 = 108/540
  4. Subtract the two like fractions:
    40/540 - 108/540 = 40 - 108/540 = -68/540
  5. After reducing the fraction, the answer is -17/135

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