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Subtract 20/84 from 2/54

2/54 - 20/84 is -38/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 84 is 756

    Next, find the equivalent fraction of both fractional numbers with denominator 756
  2. For the 1st fraction, since 54 × 14 = 756,
    2/54 = 2 × 14/54 × 14 = 28/756
  3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
    20/84 = 20 × 9/84 × 9 = 180/756
  4. Subtract the two like fractions:
    28/756 - 180/756 = 28 - 180/756 = -152/756
  5. After reducing the fraction, the answer is -38/189

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