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Subtract 5/35 from 12/81

12/81 - 5/35 is 1/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 35 is 2835

    Next, find the equivalent fraction of both fractional numbers with denominator 2835
  2. For the 1st fraction, since 81 × 35 = 2835,
    12/81 = 12 × 35/81 × 35 = 420/2835
  3. Likewise, for the 2nd fraction, since 35 × 81 = 2835,
    5/35 = 5 × 81/35 × 81 = 405/2835
  4. Subtract the two like fractions:
    420/2835 - 405/2835 = 420 - 405/2835 = 15/2835
  5. After reducing the fraction, the answer is 1/189

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