Algebra- chess game. 64 rounds

Question

A student playing a computer chess game gets 5 points every time he wins a round. The computer gets 3 points every time it wins a round. They play 64 rounds and end with a tied score. How many rounds did the computer win? 

Answer 1

What you have called rounds is called, in chess, a game. (Rounds are for boxing.)

 

W + L = 64  (wins & losses by the human).

 

3L = 5 W (tied scores).

 

Solve this system of two equations.