After going over the steps for solving Linear Systems ( simultaneous equations ) with the Substitution Method I work through 6 examples.

Example 1 4:33

Example 2 11:45

Word Problems at 19:07 and 27:40

Example 5 with 3 equations 36:08

Example 6 with No Solution 43:59

Linear Systems from Word Problems

https://www.youtube.com/watch?v=r_hT3E4giv8

Solving LInear Systems by Graphing 3 Examples

https://www.youtube.com/watch?v=yUrpRfBvcaY

Check out http://www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class.