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Subtract 3/20 from 7/80

7/80 - 3/20 is -1/16.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    7/80 = 7 × 1/80 × 1 = 7/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    3/20 = 3 × 4/20 × 4 = 12/80
  4. Subtract the two like fractions:
    7/80 - 12/80 = 7 - 12/80 = -5/80
  5. After reducing the fraction, the answer is -1/16

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