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Subtract 18/16 from 18/20

1st number: 18/20, 2nd number: 1 2/16

18/20 - 18/16 is -9/40.

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,
    18/20 = 18 × 4/20 × 4 = 72/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    18/16 = 18 × 5/16 × 5 = 90/80
  4. Subtract the two like fractions:
    72/80 - 90/80 = 72 - 90/80 = -18/80
  5. After reducing the fraction, the answer is -9/40

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