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Subtract 12/20 from 16/27

16/27 - 12/20 is -1/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 27 × 20 = 540,
    16/27 = 16 × 20/27 × 20 = 320/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    12/20 = 12 × 27/20 × 27 = 324/540
  4. Subtract the two like fractions:
    320/540 - 324/540 = 320 - 324/540 = -4/540
  5. After reducing the fraction, the answer is -1/135

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