Answers

Add 20/84 and 20/54

20/84 + 20/54 is 115/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 54 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   20/84 = 20 × 9/84 × 9 = 180/756
3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
   20/54 = 20 × 14/54 × 14 = 280/756
4. Add the two like fractions:
   180/756 + 280/756 = 180 + 280/756 = 460/756
5. 460/756 simplified gives 115/189
6. So, 20/84 + 20/54 = 115/189

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