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Subtract 1/54 from 5/42

5/42 - 1/54 is 19/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378
  2. For the 1st fraction, since 42 × 9 = 378,
    5/42 = 5 × 9/42 × 9 = 45/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    1/54 = 1 × 7/54 × 7 = 7/378
  4. Subtract the two fractions:
    45/378 - 7/378 = 45 - 7/378 = 38/378
  5. After reducing the fraction, the answer is 19/189

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