Adrienne and Suki simplified expression -8 minus -6 who’s answer is correct explain where the error was made

You did not put neither Adrienne’s nor Suki’s answer in the question so I cannot tell who’s answer is correct or explain what error they made, but I can work out and answer the math question you listed above!

Here is how I set it up,
-8-(-6)

When you have a problem that has a double negative, you can just turn that double negative into a positive, so the problem should now look like this,
-8+6

Now all you have to do is add -8 and 6.
-8+6= -2

-2 is your answer

Hope this helped! If you have any questions about what I mentioned here, feel free to comment!

2xy/9 is the answer to this problem