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Subtract 3/18 from 16/20

16/20 - 3/18 is 19/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    16/20 = 16 × 9/20 × 9 = 144/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    3/18 = 3 × 10/18 × 10 = 30/180
  4. Subtract the two like fractions:
    144/180 - 30/180 = 144 - 30/180 = 114/180
  5. After reducing the fraction, the answer is 19/30

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