Answers

Add 20/64 and 42/63

20/64 + 42/63 is 47/48.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 63 is 4032
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4032
2. For the 1st fraction, since 64 × 63 = 4032,
   20/64 = 20 × 63/64 × 63 = 1260/4032
3. Likewise, for the 2nd fraction, since 63 × 64 = 4032,
   42/63 = 42 × 64/63 × 64 = 2688/4032
4. Add the two like fractions:
   1260/4032 + 2688/4032 = 1260 + 2688/4032 = 3948/4032
5. 3948/4032 simplified gives 47/48
6. So, 20/64 + 42/63 = 47/48

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