Answers

Add 25/24 and 21/81

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

25/24 + 21/81 is 281/216.

Steps for adding 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,
   25/24 = 25 × 27/24 × 27 = 675/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   21/81 = 21 × 8/81 × 8 = 168/648
4. Add the two like fractions:
   675/648 + 168/648 = 675 + 168/648 = 843/648
5. 843/648 simplified gives 281/216
6. So, 25/24 + 21/81 = 281/216
   In mixed form: 165/216

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