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Subtract 5/6 from 20/80

20/80 - 5/6 is -7/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 6 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 80 × 3 = 240,
    20/80 = 20 × 3/80 × 3 = 60/240
  3. Likewise, for the 2nd fraction, since 6 × 40 = 240,
    5/6 = 5 × 40/6 × 40 = 200/240
  4. Subtract the two like fractions:
    60/240 - 200/240 = 60 - 200/240 = -140/240
  5. After reducing the fraction, the answer is -7/12

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