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Subtract 4/48 from 1/42

1/42 - 4/48 is -5/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 48 is 336
  2. For the 1st fraction, since 42 × 8 = 336,
    1/42 = 1 × 8/42 × 8 = 8/336
  3. Likewise, for the 2nd fraction, since 48 × 7 = 336,
    4/48 = 4 × 7/48 × 7 = 28/336
  4. Subtract the two fractions:
    8/336 - 28/336 = 8 - 28/336 = -20/336
  5. After reducing the fraction, the answer is -5/84

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