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Subtract 24/28 from 9/12

9/12 - 24/28 is -3/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    9/12 = 9 × 7/12 × 7 = 63/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    24/28 = 24 × 3/28 × 3 = 72/84
  4. Subtract the two like fractions:
    63/84 - 72/84 = 63 - 72/84 = -9/84
  5. After reducing the fraction, the answer is -3/28

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