Solve the system of linear equations. Round to the nearest hundredth. 
Definitions:
GABA Receptors
Protein sites on neurons that bind to GABA (gamma-aminobutyric acid), a major inhibitory neurotransmitter in the brain, influencing brain activity.
Glutamate Receptors
Proteins located on nerve cells that respond to glutamate, a major neurotransmitter in the brain involved in learning and memory.
Watching Television
Watching television refers to the activity of viewing content on a television set, which may include news, movies, educational programs, and other forms of visual media.
Exercising
The activity of engaging in physical workouts or activities to improve health, fitness, and overall well-being.
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