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Subtract 15/80 from 9/5

1st number: 1 4/5, 2nd number: 15/80

9/5 - 15/80 is 129/80.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 5 × 16 = 80,
    9/5 = 9 × 16/5 × 16 = 144/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    15/80 = 15 × 1/80 × 1 = 15/80
  4. Subtract the two like fractions:
    144/80 - 15/80 = 144 - 15/80 = 129/80
  5. In mixed form: 149/80

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