Answers

Add 15/98 and 27/21

1^st number: 15/98, 2^nd number: 1 6/21

15/98 + 27/21 is 141/98.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 21 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 98 × 3 = 294,
   15/98 = 15 × 3/98 × 3 = 45/294
3. Likewise, for the 2nd fraction, since 21 × 14 = 294,
   27/21 = 27 × 14/21 × 14 = 378/294
4. Add the two like fractions:
   45/294 + 378/294 = 45 + 378/294 = 423/294
5. 423/294 simplified gives 141/98
6. So, 15/98 + 27/21 = 141/98
   In mixed form: 143/98

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