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Subtract 3/14 from 7/42

7/42 - 3/14 is -1/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 14 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 42 × 1 = 42,
    7/42 = 7 × 1/42 × 1 = 7/42
  3. Likewise, for the 2nd fraction, since 14 × 3 = 42,
    3/14 = 3 × 3/14 × 3 = 9/42
  4. Subtract the two like fractions:
    7/42 - 9/42 = 7 - 9/42 = -2/42
  5. After reducing the fraction, the answer is -1/21

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