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Subtract 1/21 from 27/8

1st number: 3 3/8, 2nd number: 1/21

27/8 - 1/21 is 559/168.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168
  2. For the 1st fraction, since 8 × 21 = 168,
    27/8 = 27 × 21/8 × 21 = 567/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    1/21 = 1 × 8/21 × 8 = 8/168
  4. Subtract the two fractions:
    567/168 - 8/168 = 567 - 8/168 = 559/168
  5. In mixed form: 355/168

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