Answers

Add 10/81 and 20/54

10/81 + 20/54 is 40/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 54 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 81 × 2 = 162,
   10/81 = 10 × 2/81 × 2 = 20/162
3. Likewise, for the 2nd fraction, since 54 × 3 = 162,
   20/54 = 20 × 3/54 × 3 = 60/162
4. Add the two like fractions:
   20/162 + 60/162 = 20 + 60/162 = 80/162
5. 80/162 simplified gives 40/81
6. So, 10/81 + 20/54 = 40/81

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