Answers

Subtract 8/81 from 4/54

4/54 - 8/81 is -2/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 54 × 3 = 162,
   4/54 = 4 × 3/54 × 3 = 12/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   8/81 = 8 × 2/81 × 2 = 16/162
4. Subtract the two like fractions:
   12/162 - 16/162 = 12 - 16/162 = -4/162
5. After reducing the fraction, the answer is -2/81

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