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Subtract 18/21 from 27/8

1st number: 3 3/8, 2nd number: 18/21

27/8 - 18/21 is 141/56.

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,
    18/21 = 18 × 8/21 × 8 = 144/168
  4. Subtract the two fractions:
    567/168 - 144/168 = 567 - 144/168 = 423/168
  5. After reducing the fraction, the answer is 141/56
  6. In mixed form: 229/56

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