After completing 5 of these problems tonight, this one has me stumped!

In a recent year, companies spent a total of $84.8 billion on newspaper, television, and radio ads. The total amount spent on television and radio ads was only $2.6 billion more than the amount spent on newspaper ads alone. The amount spent on newspaper ads was $5.1 billion more than what was spent on television ads. How much was spent no each form of advertising? (Hint: Let the variables represent numbers of billions of dollars)

Help on this would be greatly appreciated!!!!

Todd