Answers

Add 72/21 and 24/98

1^st number: 3 9/21, 2^nd number: 24/98

72/21 + 24/98 is 180/49.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 98 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 21 × 14 = 294,
   72/21 = 72 × 14/21 × 14 = 1008/294
3. Likewise, for the 2nd fraction, since 98 × 3 = 294,
   24/98 = 24 × 3/98 × 3 = 72/294
4. Add the two like fractions:
   1008/294 + 72/294 = 1008 + 72/294 = 1080/294
5. 1080/294 simplified gives 180/49
6. So, 72/21 + 24/98 = 180/49
   In mixed form: 333/49

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