linear matrices? how to solve?
http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=q5X&ei=sm8DSpmGF5WatAPe8rnkAQ&sa=X&oi=spell&resnum=1&ct=result&cd=1&q=linear+matrices&spell=1
The first link is probably what you want.