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Subtract 2/7 from 3/12

3/12 - 2/7 is -1/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    3/12 = 3 × 7/12 × 7 = 21/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    2/7 = 2 × 12/7 × 12 = 24/84
  4. Subtract the two like fractions:
    21/84 - 24/84 = 21 - 24/84 = -3/84
  5. After reducing the fraction, the answer is -1/28

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