Khan Academy on a Stick
Trolls, tolls, and systems of equations
A troll forces us to use algebra to figure out the make-up of his currency. We end up setting up a system of equations
If the above player doesn't work, try this direct link.
A troll forces us to use algebra to figure out the make-up of his currency. We end up setting up a system of equations
If the above player doesn't work, try this direct link.