Answers

Subtract 20/81 from 10/15

10/15 - 20/81 is 34/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   10/15 = 10 × 27/15 × 27 = 270/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   20/81 = 20 × 5/81 × 5 = 100/405
4. Subtract the two like fractions:
   270/405 - 100/405 = 270 - 100/405 = 170/405
5. After reducing the fraction, the answer is 34/81

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