Solve the system of linear equations using the Gauss-Jordan elimination method. 
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A written offer from a seller to a prospective buyer detailing the products or services offered.
Introduction
The initial section of a document or speech that sets the context, outlines the purpose, and often provides a summary of what is to follow.
Topics Areas
Specific subjects or themes that are covered within a broader general topic.
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A proposal requested by an organization or individual, often in response to a specific need or project outlined in a request for proposal (RFP).
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