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Subtract 14/21 from 12/56

12/56 - 14/21 is -19/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 56 × 3 = 168,
    12/56 = 12 × 3/56 × 3 = 36/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    14/21 = 14 × 8/21 × 8 = 112/168
  4. Subtract the two like fractions:
    36/168 - 112/168 = 36 - 112/168 = -76/168
  5. After reducing the fraction, the answer is -19/42

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