Answers

Add 10/63 and 20/64

10/63 + 20/64 is 475/1008.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 64 is 4032
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4032
2. For the 1st fraction, since 63 × 64 = 4032,
   10/63 = 10 × 64/63 × 64 = 640/4032
3. Likewise, for the 2nd fraction, since 64 × 63 = 4032,
   20/64 = 20 × 63/64 × 63 = 1260/4032
4. Add the two like fractions:
   640/4032 + 1260/4032 = 640 + 1260/4032 = 1900/4032
5. 1900/4032 simplified gives 475/1008
6. So, 10/63 + 20/64 = 475/1008

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