Answers

Add 28/20 and 54/36

1^st number: 1 8/20, 2^nd number: 1 18/36

28/20 + 54/36 is 29/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 36 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   28/20 = 28 × 9/20 × 9 = 252/180
3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
   54/36 = 54 × 5/36 × 5 = 270/180
4. Add the two like fractions:
   252/180 + 270/180 = 252 + 270/180 = 522/180
5. 522/180 simplified gives 29/10
6. So, 28/20 + 54/36 = 29/10
   In mixed form: 29/10

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