Answers

Add 45/16 and 45/20

1^st number: 2 13/16, 2^nd number: 2 5/20

45/16 + 45/20 is 81/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 16 × 5 = 80,
   45/16 = 45 × 5/16 × 5 = 225/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   45/20 = 45 × 4/20 × 4 = 180/80
4. Add the two like fractions:
   225/80 + 180/80 = 225 + 180/80 = 405/80
5. 405/80 simplified gives 81/16
6. So, 45/16 + 45/20 = 81/16
   In mixed form: 51/16

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