Answers

Add 8/49 and 18/81

8/49 + 18/81 is 170/441.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 81 is 3969
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3969
2. For the 1st fraction, since 49 × 81 = 3969,
   8/49 = 8 × 81/49 × 81 = 648/3969
3. Likewise, for the 2nd fraction, since 81 × 49 = 3969,
   18/81 = 18 × 49/81 × 49 = 882/3969
4. Add the two like fractions:
   648/3969 + 882/3969 = 648 + 882/3969 = 1530/3969
5. 1530/3969 simplified gives 170/441
6. So, 8/49 + 18/81 = 170/441

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