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Use Cramer's rule to find the solution of the system, if possible.
Oral Medium
A method of communication where information is conveyed through spoken words, typically used in conversations, speeches, and presentations.
Print Channel
A medium through which information is distributed in printed form, such as newspapers, magazines, or books.
Formality
The strict adherence to established rules, customs, or etiquette.
Printed Memos
Physical memorandums circulated within an organization to communicate information or instructions.
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