Answers

Subtract 96/81 from 21/24

1^st number: 21/24, 2^nd number: 1 15/81

21/24 - 96/81 is -67/216.

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,
   21/24 = 21 × 27/24 × 27 = 567/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   96/81 = 96 × 8/81 × 8 = 768/648
4. Subtract the two like fractions:
   567/648 - 768/648 = 567 - 768/648 = -201/648
5. After reducing the fraction, the answer is -67/216

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