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Subtract 5/81 from 2/84

2/84 - 5/81 is -43/1134.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 81 is 2268
  2. For the 1st fraction, since 84 × 27 = 2268,
    2/84 = 2 × 27/84 × 27 = 54/2268
  3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
    5/81 = 5 × 28/81 × 28 = 140/2268
  4. Subtract the two fractions:
    54/2268 - 140/2268 = 54 - 140/2268 = -86/2268
  5. After reducing the fraction, the answer is -43/1134

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