Before, we learned how to solve systems with two equations and two unknowns... 2 x 2's.
Here's an example of the type we solved:
Remember that these are two lines:
|The point where the two lines intersect is the solution:|
So, x = 2 and y = 1 work in BOTH equations.
Now, we're going to do 3 x 3's -- systems with three equations and three unknowns.
Like this guy: