The owner of ‘War Zone’ gaming shop uses 3 different colored tokens for their game

machines. For $20 you can purchase any of the following mixtures of tokens: 14 green,
20 red and 24 yellow; OR, 20 green, 15 red and 19 yellow; OR, 30 green, 5 red, and 13
yellow. Write a system of equations that can be used to find the monetary value of each
token. Use an appropriate method to solve the system of equations.

14g+20r+24y = 20

20g+15r+19y = 20
30g+5r+13y = 20