Answers

Add 70/64 and 63/15

1^st number: 1 6/64, 2^nd number: 4 3/15

70/64 + 63/15 is 847/160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 15 is 960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 960
2. For the 1st fraction, since 64 × 15 = 960,
   70/64 = 70 × 15/64 × 15 = 1050/960
3. Likewise, for the 2nd fraction, since 15 × 64 = 960,
   63/15 = 63 × 64/15 × 64 = 4032/960
4. Add the two like fractions:
   1050/960 + 4032/960 = 1050 + 4032/960 = 5082/960
5. 5082/960 simplified gives 847/160
6. So, 70/64 + 63/15 = 847/160
   In mixed form: 547/160

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