SOLUTION: At an audio store, stereos have 2 speakers and home-theater systems have 5 speakers.There are 30 sound systems with a total of 99 speakers. How many systems are stereo systems and

Algebra ->  Human-and-algebraic-language -> SOLUTION: At an audio store, stereos have 2 speakers and home-theater systems have 5 speakers.There are 30 sound systems with a total of 99 speakers. How many systems are stereo systems and       Log On