Answers

Subtract 1/81 from 15/24

15/24 - 1/81 is 397/648.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 24 × 27 = 648,
   15/24 = 15 × 27/24 × 27 = 405/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   1/81 = 1 × 8/81 × 8 = 8/648
4. Subtract the two like fractions:
   405/648 - 8/648 = 405 - 8/648 = 397/648

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