Answers

Add 63/5 and 63/16

1^st number: 12 3/5, 2^nd number: 3 15/16

63/5 + 63/16 is 1323/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 5 × 16 = 80,
   63/5 = 63 × 16/5 × 16 = 1008/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   63/16 = 63 × 5/16 × 5 = 315/80
4. Add the two like fractions:
   1008/80 + 315/80 = 1008 + 315/80 = 1323/80
5. So, 63/5 + 63/16 = 1323/80
   In mixed form: 1643/80

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