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Subtract 48/42 from 3/8

1st number: 3/8, 2nd number: 1 6/42

3/8 - 48/42 is -43/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 42 is 168
  2. For the 1st fraction, since 8 × 21 = 168,
    3/8 = 3 × 21/8 × 21 = 63/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    48/42 = 48 × 4/42 × 4 = 192/168
  4. Subtract the two fractions:
    63/168 - 192/168 = 63 - 192/168 = -129/168
  5. After reducing the fraction, the answer is -43/56

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