C1W2_Assignment: Suggestion to Update comment

[Mohanish_Pachlore]

1. Referring to Exercise 2 of the Assignment Notebook, a change in comment might be helpful pointer? Refer the screen capture with probable suggestion for change.

2. Curious why there are 2 separate steps for back substitution and Replacement?
   Refer screen capture for this:
   
   

I have done it a bit differently then the suggested/pointed way in the comments and all the tests are passed. But, just wanted to know different way of doing it especially from the comments in the assignment.

[TMosh]

Thanks for your comment.

All three of these issues have already been reported, and an update is in progress.