Answers

Add 81/98 and 42/9

1^st number: 81/98, 2^nd number: 4 6/9

81/98 + 42/9 is 1615/294.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 9 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 98 × 9 = 882,
   81/98 = 81 × 9/98 × 9 = 729/882
3. Likewise, for the 2nd fraction, since 9 × 98 = 882,
   42/9 = 42 × 98/9 × 98 = 4116/882
4. Add the two like fractions:
   729/882 + 4116/882 = 729 + 4116/882 = 4845/882
5. 4845/882 simplified gives 1615/294
6. So, 81/98 + 42/9 = 1615/294
   In mixed form: 5145/294

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