Answers

Add 63/4 and 25/84

1^st number: 15 3/4, 2^nd number: 25/84

63/4 + 25/84 is 337/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   63/4 = 63 × 21/4 × 21 = 1323/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   25/84 = 25 × 1/84 × 1 = 25/84
4. Add the two like fractions:
   1323/84 + 25/84 = 1323 + 25/84 = 1348/84
5. 1348/84 simplified gives 337/21
6. So, 63/4 + 25/84 = 337/21
   In mixed form: 161/21

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