Answers

Add 98/5 and 20/81

1^st number: 19 3/5, 2^nd number: 20/81

98/5 + 20/81 is 8038/405.

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,
   98/5 = 98 × 81/5 × 81 = 7938/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   20/81 = 20 × 5/81 × 5 = 100/405
4. Add the two like fractions:
   7938/405 + 100/405 = 7938 + 100/405 = 8038/405
5. So, 98/5 + 20/81 = 8038/405
   In mixed form: 19343/405

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