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Subtract 5/8 from 20/84

20/84 - 5/8 is -65/168.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 84 × 2 = 168,
    20/84 = 20 × 2/84 × 2 = 40/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    5/8 = 5 × 21/8 × 21 = 105/168
  4. Subtract the two like fractions:
    40/168 - 105/168 = 40 - 105/168 = -65/168

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