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Subtract 16/27 from 21/8

1st number: 2 5/8, 2nd number: 16/27

21/8 - 16/27 is 439/216.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 27 is 216
  2. For the 1st fraction, since 8 × 27 = 216,
    21/8 = 21 × 27/8 × 27 = 567/216
  3. Likewise, for the 2nd fraction, since 27 × 8 = 216,
    16/27 = 16 × 8/27 × 8 = 128/216
  4. Subtract the two fractions:
    567/216 - 128/216 = 567 - 128/216 = 439/216
  5. In mixed form: 27/216

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