Answers

Add 15/5 and 28/81

1^st number: 3 0/5, 2^nd number: 28/81

15/5 + 28/81 is 271/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 5 × 81 = 405,
   15/5 = 15 × 81/5 × 81 = 1215/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   28/81 = 28 × 5/81 × 5 = 140/405
4. Add the two like fractions:
   1215/405 + 140/405 = 1215 + 140/405 = 1355/405
5. 1355/405 simplified gives 271/81
6. So, 15/5 + 28/81 = 271/81
   In mixed form: 328/81

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