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Subtract 10/27 from 42/81

42/81 - 10/27 is 4/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 27 is 81
  2. For the 1st fraction, since 81 × 1 = 81,
    42/81 = 42 × 1/81 × 1 = 42/81
  3. Likewise, for the 2nd fraction, since 27 × 3 = 81,
    10/27 = 10 × 3/27 × 3 = 30/81
  4. Subtract the two fractions:
    42/81 - 30/81 = 42 - 30/81 = 12/81
  5. After reducing the fraction, the answer is 4/27

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