Answers

Subtract 10/18 from 2/81

2/81 - 10/18 is -43/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 18 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 81 × 2 = 162,
   2/81 = 2 × 2/81 × 2 = 4/162
3. Likewise, for the 2nd fraction, since 18 × 9 = 162,
   10/18 = 10 × 9/18 × 9 = 90/162
4. Subtract the two like fractions:
   4/162 - 90/162 = 4 - 90/162 = -86/162
5. After reducing the fraction, the answer is -43/81

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