Answers

Add 64/20 and 45/48

1^st number: 3 4/20, 2^nd number: 45/48

64/20 + 45/48 is 331/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 20 × 12 = 240,
   64/20 = 64 × 12/20 × 12 = 768/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   45/48 = 45 × 5/48 × 5 = 225/240
4. Add the two like fractions:
   768/240 + 225/240 = 768 + 225/240 = 993/240
5. 993/240 simplified gives 331/80
6. So, 64/20 + 45/48 = 331/80
   In mixed form: 411/80

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