Answers

Add 20/54 and 42/84

20/54 + 42/84 is 47/54.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 84 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 54 × 14 = 756,
   20/54 = 20 × 14/54 × 14 = 280/756
3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
   42/84 = 42 × 9/84 × 9 = 378/756
4. Add the two like fractions:
   280/756 + 378/756 = 280 + 378/756 = 658/756
5. 658/756 simplified gives 47/54
6. So, 20/54 + 42/84 = 47/54

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