Answers

Add 84/63 and 15/96

1^st number: 1 21/63, 2^nd number: 15/96

84/63 + 15/96 is 143/96.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 96 is 2016
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2016
2. For the 1st fraction, since 63 × 32 = 2016,
   84/63 = 84 × 32/63 × 32 = 2688/2016
3. Likewise, for the 2nd fraction, since 96 × 21 = 2016,
   15/96 = 15 × 21/96 × 21 = 315/2016
4. Add the two like fractions:
   2688/2016 + 315/2016 = 2688 + 315/2016 = 3003/2016
5. 3003/2016 simplified gives 143/96
6. So, 84/63 + 15/96 = 143/96
   In mixed form: 147/96

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