Answers

Add 54/15 and 50/81

1^st number: 3 9/15, 2^nd number: 50/81

54/15 + 50/81 is 1708/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   54/15 = 54 × 27/15 × 27 = 1458/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   50/81 = 50 × 5/81 × 5 = 250/405
4. Add the two like fractions:
   1458/405 + 250/405 = 1458 + 250/405 = 1708/405
5. So, 54/15 + 50/81 = 1708/405
   In mixed form: 488/405

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