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Subtract 9/16 from 8/20

8/20 - 9/16 is -13/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 20 × 4 = 80,
    8/20 = 8 × 4/20 × 4 = 32/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    9/16 = 9 × 5/16 × 5 = 45/80
  4. Subtract the two like fractions:
    32/80 - 45/80 = 32 - 45/80 = -13/80

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