Answer:

Explanation:
2 movies and 6 video games for $40. 
 5 movies and 3 video games for $25. 

We set up systems of equations.


 <-- This step is done so we can make the numbers before the 
 the same.
<-- Notice now how the numbers before the 
 are the same.
Now, since the numbers before the 
 are the same, we subtract to get rid of them.

We now know that 

Replace 10 as 
 in the first eqation to find 
: 

Solve
 

Therefore 
