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Subtract 63/56 from 8/21

1st number: 8/21, 2nd number: 1 7/56

8/21 - 63/56 is -125/168.

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,
    63/56 = 63 × 3/56 × 3 = 189/168
  4. Subtract the two like fractions:
    64/168 - 189/168 = 64 - 189/168 = -125/168

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