Answers

Add 81/72 and 2/98

1^st number: 1 9/72, 2^nd number: 2/98

81/72 + 2/98 is 449/392.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 98 is 3528
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3528
2. For the 1st fraction, since 72 × 49 = 3528,
   81/72 = 81 × 49/72 × 49 = 3969/3528
3. Likewise, for the 2nd fraction, since 98 × 36 = 3528,
   2/98 = 2 × 36/98 × 36 = 72/3528
4. Add the two like fractions:
   3969/3528 + 72/3528 = 3969 + 72/3528 = 4041/3528
5. 4041/3528 simplified gives 449/392
6. So, 81/72 + 2/98 = 449/392
   In mixed form: 157/392

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