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Subtract 63/42 from 27/56

1st number: 27/56, 2nd number: 1 21/42

27/56 - 63/42 is -57/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 42 is 168
  2. For the 1st fraction, since 56 × 3 = 168,
    27/56 = 27 × 3/56 × 3 = 81/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    63/42 = 63 × 4/42 × 4 = 252/168
  4. Subtract the two fractions:
    81/168 - 252/168 = 81 - 252/168 = -171/168
  5. After reducing the fraction, the answer is -57/56

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