Ned help with rational expressions, I'm lost.

[beth]

I need help with problems 4, 10, 16, 24, and 40 please help. I have add attachment.

 

[stapel]

I need help with problems 4, 10, 16, 24, and 40 please help. I have add attachment.

Sorry, but I see no attachment.

Please reply with the exercises, remembering to include a clear listing of everything you have tried so far. Thank you!

Eliz.