HP 48GX and HP Prime - Solving a multi-variable equation for a given variable

The HP 48GX representing the "old school" RPN approach and the HP Prime representing the "new school" Algebraic approach tackle the same problems. The goal of this playlist was to give people a feel for the advantages and disadvantages of RPN (postfix) vs Algebraic (infix) in some typical, real-world problem solving scenarios. If you have a better way to tackle the presented problems, please be sure to let me know. HERE (https://www.dropbox.com/s/dz8ok8pk14mt7bd/hp48gx%20custom%20menus%20and%20directories%20structure.pdf?dl=0) is a 2 page PDF showing the current configuration I am using for the menu structure and custom menus -- it has changed somewhat since I made the video (in part b/c of helpful feedback by viewers -- thank you).