Answers

Add 56/15 and 21/64

1^st number: 3 11/15, 2^nd number: 21/64

56/15 + 21/64 is 3899/960.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 64 is 960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 960
2. For the 1st fraction, since 15 × 64 = 960,
   56/15 = 56 × 64/15 × 64 = 3584/960
3. Likewise, for the 2nd fraction, since 64 × 15 = 960,
   21/64 = 21 × 15/64 × 15 = 315/960
4. Add the two like fractions:
   3584/960 + 315/960 = 3584 + 315/960 = 3899/960
5. So, 56/15 + 21/64 = 3899/960
   In mixed form: 459/960

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