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Subtract 6/56 from 8/21

8/21 - 6/56 is 23/84.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 21 × 8 = 168,
    8/21 = 8 × 8/21 × 8 = 64/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    6/56 = 6 × 3/56 × 3 = 18/168
  4. Subtract the two like fractions:
    64/168 - 18/168 = 64 - 18/168 = 46/168
  5. After reducing the fraction, the answer is 23/84

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