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Subtract 7/40 from 9/80

9/80 - 7/40 is -1/16.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 40 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 40 × 2 = 80,
    7/40 = 7 × 2/40 × 2 = 14/80
  4. Subtract the two like fractions:
    9/80 - 14/80 = 9 - 14/80 = -5/80
  5. After reducing the fraction, the answer is -1/16

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