Part II has been added. See below
I am learning to use screencasting software and here is my first effort. I now know that I am more glib in my head than in reality and that I need to work on getting a good microphone.
Warning to all beginning algebra students: The answers you get using this method will not be the same as those in your text nor what your math instructor expects to see, but they will be correct and more useful. You will also get them faster.