Answers

Add 72/5 and 21/63

1^st number: 14 2/5, 2^nd number: 21/63

72/5 + 21/63 is 221/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 5 × 63 = 315,
   72/5 = 72 × 63/5 × 63 = 4536/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   21/63 = 21 × 5/63 × 5 = 105/315
4. Add the two like fractions:
   4536/315 + 105/315 = 4536 + 105/315 = 4641/315
5. 4641/315 simplified gives 221/15
6. So, 72/5 + 21/63 = 221/15
   In mixed form: 1411/15

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