Answers

Subtract 8/81 from 18/30

18/30 - 8/81 is 203/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   18/30 = 18 × 27/30 × 27 = 486/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   8/81 = 8 × 10/81 × 10 = 80/810
4. Subtract the two like fractions:
   486/810 - 80/810 = 486 - 80/810 = 406/810
5. After reducing the fraction, the answer is 203/405

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