Answers

Add 15/20 and 54/16

1^st number: 15/20, 2^nd number: 3 6/16

15/20 + 54/16 is 33/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   15/20 = 15 × 4/20 × 4 = 60/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   54/16 = 54 × 5/16 × 5 = 270/80
4. Add the two like fractions:
   60/80 + 270/80 = 60 + 270/80 = 330/80
5. 330/80 simplified gives 33/8
6. So, 15/20 + 54/16 = 33/8
   In mixed form: 41/8

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