Answers

Add 45/54 and 80/40

1^st number: 45/54, 2^nd number: 2 0/40

45/54 + 80/40 is 17/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   45/54 = 45 × 20/54 × 20 = 900/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   80/40 = 80 × 27/40 × 27 = 2160/1080
4. Add the two like fractions:
   900/1080 + 2160/1080 = 900 + 2160/1080 = 3060/1080
5. 3060/1080 simplified gives 17/6
6. So, 45/54 + 80/40 = 17/6
   In mixed form: 25/6

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