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Subtract 70/81 from 2/18

2/18 - 70/81 is -61/81.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 81 is 162

    Next, find the equivalent fraction of both fractional numbers with denominator 162
  2. For the 1st fraction, since 18 × 9 = 162,
    2/18 = 2 × 9/18 × 9 = 18/162
  3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
    70/81 = 70 × 2/81 × 2 = 140/162
  4. Subtract the two like fractions:
    18/162 - 140/162 = 18 - 140/162 = -122/162
  5. After reducing the fraction, the answer is -61/81

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