Answers

Add 98/21 and 63/72

1^st number: 4 14/21, 2^nd number: 63/72

98/21 + 63/72 is 133/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   98/21 = 98 × 24/21 × 24 = 2352/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   63/72 = 63 × 7/72 × 7 = 441/504
4. Add the two like fractions:
   2352/504 + 441/504 = 2352 + 441/504 = 2793/504
5. 2793/504 simplified gives 133/24
6. So, 98/21 + 63/72 = 133/24
   In mixed form: 513/24

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