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Subtract 20/84 from 5/27

5/27 - 20/84 is -10/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 84 is 756

    Next, find the equivalent fraction of both fractional numbers with denominator 756
  2. For the 1st fraction, since 27 × 28 = 756,
    5/27 = 5 × 28/27 × 28 = 140/756
  3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
    20/84 = 20 × 9/84 × 9 = 180/756
  4. Subtract the two like fractions:
    140/756 - 180/756 = 140 - 180/756 = -40/756
  5. After reducing the fraction, the answer is -10/189

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