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Subtract 81/42 from 63/42

1st number: 1 21/42, 2nd number: 1 39/42

63/42 - 81/42 is -3/7.

Steps for subtracting fractions

  1. Subtract the two fractions:
    63/42 - 81/42 = 63 - 81/42 = -18/42
  2. After reducing the fraction, the answer is -3/7

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