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Subtract 12/48 from 1/42

1/42 - 12/48 is -19/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 48 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    12/48 = 12 × 7/48 × 7 = 84/336
  4. Subtract the two like fractions:
    8/336 - 84/336 = 8 - 84/336 = -76/336
  5. After reducing the fraction, the answer is -19/84

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