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Subtract 6/7 from 20/60

20/60 - 6/7 is -11/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 7 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    20/60 = 20 × 7/60 × 7 = 140/420
  3. Likewise, for the 2nd fraction, since 7 × 60 = 420,
    6/7 = 6 × 60/7 × 60 = 360/420
  4. Subtract the two like fractions:
    140/420 - 360/420 = 140 - 360/420 = -220/420
  5. After reducing the fraction, the answer is -11/21

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