Use Cramer's rule, whenever possible, to solve the system. 
Definitions:
Academic Performance
The level of achievement or success a student attains in their educational pursuits, often measured by grades or test scores.
Conduct Problems
Behavioral issues in children and adolescents that involve breaking societal rules, defying authority, and showing aggression towards others.
Poverty
A state of having insufficient financial resources to meet basic living needs such as food, shelter, and clothing.
Middle-Class Parents
Parents who belong to the socio-economic group characterized by average income, education level, and occupational prestige.
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