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Subtract 2/24 from 21/42

21/42 - 2/24 is 5/12.

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,
    21/42 = 21 × 4/42 × 4 = 84/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    2/24 = 2 × 7/24 × 7 = 14/168
  4. Subtract the two like fractions:
    84/168 - 14/168 = 84 - 14/168 = 70/168
  5. After reducing the fraction, the answer is 5/12

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