Answers

Add 20/64 and 54/45

1^st number: 20/64, 2^nd number: 1 9/45

20/64 + 54/45 is 121/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 45 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 64 × 45 = 2880,
   20/64 = 20 × 45/64 × 45 = 900/2880
3. Likewise, for the 2nd fraction, since 45 × 64 = 2880,
   54/45 = 54 × 64/45 × 64 = 3456/2880
4. Add the two like fractions:
   900/2880 + 3456/2880 = 900 + 3456/2880 = 4356/2880
5. 4356/2880 simplified gives 121/80
6. So, 20/64 + 54/45 = 121/80
   In mixed form: 141/80

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