Week 8 General Chemistry: Balancing Equations

I like the way they set-up this tutorial; it was really easy to see how many atoms of each element were on each side of the equation in this example. But, I wish that there was more than just one example. Because when I went back to the previous Chem Balancer equations and Brain Boggle, and tried to apply what I had learned, I still couldn't balance #7 from the first test series -or- the Brain Boggle question. There just didn't seem to be any way to balance them out...