Two Equilibrium problems; please correct my work

[Soju]

Hello;

I've run into two problems on my equilibrium homework. I've attached a pdf document which shows the questions and the work I've done to solve them.

Please let me know where I am going wrong!

Thank you in advance.

 

[Soju]

Hey all... I managed to get the first question right (attached with sln!)

Can't figure out #2 on the pdf still.