Answers

Add 54/28 and 75/20

1^st number: 1 26/28, 2^nd number: 3 15/20

54/28 + 75/20 is 159/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   54/28 = 54 × 5/28 × 5 = 270/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   75/20 = 75 × 7/20 × 7 = 525/140
4. Add the two like fractions:
   270/140 + 525/140 = 270 + 525/140 = 795/140
5. 795/140 simplified gives 159/28
6. So, 54/28 + 75/20 = 159/28
   In mixed form: 519/28

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