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Subtract 1/54 from 42/56

42/56 - 1/54 is 79/108.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 54 is 1512
  2. For the 1st fraction, since 56 × 27 = 1512,
    42/56 = 42 × 27/56 × 27 = 1134/1512
  3. Likewise, for the 2nd fraction, since 54 × 28 = 1512,
    1/54 = 1 × 28/54 × 28 = 28/1512
  4. Subtract the two fractions:
    1134/1512 - 28/1512 = 1134 - 28/1512 = 1106/1512
  5. After reducing the fraction, the answer is 79/108

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