I am stuck on a problem here that I have been looking at since last week. If someone could guide me in the right direction I would appreciate it before my head explodes!

SEE ATTACHED DOCUMENT: I did not realize when I copied and pasted the original equation it changed it to the same size font. It was an intelligible equation when I typed it.

I am utterly lost. Where would I even begin in order to solve?

Thanks for any help!