Answers

Add 20/14 and 54/64

1^st number: 1 6/14, 2^nd number: 54/64

20/14 + 54/64 is 509/224.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 64 is 448
   
   Next, find the equivalent fraction of both fractional numbers with denominator 448
2. For the 1st fraction, since 14 × 32 = 448,
   20/14 = 20 × 32/14 × 32 = 640/448
3. Likewise, for the 2nd fraction, since 64 × 7 = 448,
   54/64 = 54 × 7/64 × 7 = 378/448
4. Add the two like fractions:
   640/448 + 378/448 = 640 + 378/448 = 1018/448
5. 1018/448 simplified gives 509/224
6. So, 20/14 + 54/64 = 509/224
   In mixed form: 261/224

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