Answers

Add 16/81 and 8/10

16/81 + 8/10 is 404/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 10 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   16/81 = 16 × 10/81 × 10 = 160/810
3. Likewise, for the 2nd fraction, since 10 × 81 = 810,
   8/10 = 8 × 81/10 × 81 = 648/810
4. Add the two like fractions:
   160/810 + 648/810 = 160 + 648/810 = 808/810
5. 808/810 simplified gives 404/405
6. So, 16/81 + 8/10 = 404/405

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