Solve the system by Gauss - Jordan elimination. 
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Self-Esteem
An individual's subjective evaluation of their own worth, encompassing beliefs and emotions about oneself.
Anxious
Feeling worried, uneasy, or nervous about an uncertain outcome or future event.
Questionnaire
A set of written questions used to collect information from respondents, typically in research or surveys.
Behavioral Observations
The systematic recording and analysis of actions and behaviors in a natural or controlled setting.
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