link test

Here's another "how to" explanation link I'm testing
Hey! I just tested it and it seems to work very well!
Sect 3/4/5 if you can try it out - it explains a messy mixed number problem both ways - mixed and improper.
It's actually #17 on the 5.3 practice sheet.

http://www.educreations.com/lesson/view/subtraction/357154/

Here's one with variables - #27 on the back of 5.3 worksheet:
http://www.educreations.com/lesson/view/variable-add/357258/