Answers

Add 27/54 and 27/80

27/54 + 27/80 is 67/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   27/54 = 27 × 40/54 × 40 = 1080/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   27/80 = 27 × 27/80 × 27 = 729/2160
4. Add the two like fractions:
   1080/2160 + 729/2160 = 1080 + 729/2160 = 1809/2160
5. 1809/2160 simplified gives 67/80
6. So, 27/54 + 27/80 = 67/80

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