Answers

Add 28/20 and 54/18

1^st number: 1 8/20, 2^nd number: 3 0/18

28/20 + 54/18 is 22/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 18 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 18 × 10 = 180,
   54/18 = 54 × 10/18 × 10 = 540/180
4. Add the two like fractions:
   252/180 + 540/180 = 252 + 540/180 = 792/180
5. 792/180 simplified gives 22/5
6. So, 28/20 + 54/18 = 22/5
   In mixed form: 42/5

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