Please, did I do this right?

Question

Can someone tell me if I solved this correctly, please? I have no idea. (please click on the image)

http://s233.photobucket.com/albums/ee90/IrisChan7/ai/

Answer 1

You have the right idea.  Though I'd check your algebra on the last two or three lines.  The 16 - 5 should become 11, not 16-11.

Answer 2

Yes it is correct