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Subtract 12/5 from 9/80

1st number: 9/80, 2nd number: 2 2/5

9/80 - 12/5 is -183/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 5 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    9/80 = 9 × 1/80 × 1 = 9/80
  3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
    12/5 = 12 × 16/5 × 16 = 192/80
  4. Subtract the two like fractions:
    9/80 - 192/80 = 9 - 192/80 = -183/80

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