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Subtract 48/42 from 3/84

1st number: 3/84, 2nd number: 1 6/42

3/84 - 48/42 is -31/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 42 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    3/84 = 3 × 1/84 × 1 = 3/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    48/42 = 48 × 2/42 × 2 = 96/84
  4. Subtract the two fractions:
    3/84 - 96/84 = 3 - 96/84 = -93/84
  5. After reducing the fraction, the answer is -31/28

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