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Subtract 70/81 from 6/9

6/9 - 70/81 is -16/81.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 81 is 81
  2. For the 1st fraction, since 9 × 9 = 81,
    6/9 = 6 × 9/9 × 9 = 54/81
  3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
    70/81 = 70 × 1/81 × 1 = 70/81
  4. Subtract the two fractions:
    54/81 - 70/81 = 54 - 70/81 = -16/81

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