Short Answer

Efficient Variable Substitution

A financial analyst is comparing two cost models represented by the system of equations y=2x+5y = -2x + 5 and y=12xy = \frac{1}{2}x. When using the substitution method to find where these models intersect, why is an algebraic rearrangement to isolate a variable not required for the first step of the process?

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Updated 2026-04-16

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