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Subtract 28/40 from 16/54

16/54 - 28/40 is -109/270.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 40 is 1080
  2. For the 1st fraction, since 54 × 20 = 1080,
    16/54 = 16 × 20/54 × 20 = 320/1080
  3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
    28/40 = 28 × 27/40 × 27 = 756/1080
  4. Subtract the two fractions:
    320/1080 - 756/1080 = 320 - 756/1080 = -436/1080
  5. After reducing the fraction, the answer is -109/270

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