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Subtract 4/24 from 3/42

3/42 - 4/24 is -2/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 24 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    3/42 = 3 × 4/42 × 4 = 12/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    4/24 = 4 × 7/24 × 7 = 28/168
  4. Subtract the two like fractions:
    12/168 - 28/168 = 12 - 28/168 = -16/168
  5. After reducing the fraction, the answer is -2/21

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