Answers

Add 20/42 and 7/64

20/42 + 7/64 is 787/1344.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 42 × 32 = 1344,
   20/42 = 20 × 32/42 × 32 = 640/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   7/64 = 7 × 21/64 × 21 = 147/1344
4. Add the two like fractions:
   640/1344 + 147/1344 = 640 + 147/1344 = 787/1344
5. So, 20/42 + 7/64 = 787/1344

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