Answers

Add 54/10 and 25/81

1^st number: 5 4/10, 2^nd number: 25/81

54/10 + 25/81 is 2312/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 10 × 81 = 810,
   54/10 = 54 × 81/10 × 81 = 4374/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   25/81 = 25 × 10/81 × 10 = 250/810
4. Add the two like fractions:
   4374/810 + 250/810 = 4374 + 250/810 = 4624/810
5. 4624/810 simplified gives 2312/405
6. So, 54/10 + 25/81 = 2312/405
   In mixed form: 5287/405

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