Case Study

Calculating Calories for Corporate Wellness Apps

A corporate wellness coordinator is analyzing two different meal bundles to determine the individual calorie counts for a new company nutrition app. The coordinator has successfully translated the bundle data into the following system of equations:

{f+2s=6202f+s=820\left\{\begin{array}{l} f + 2s = 620 \\ 2f + s = 820 \end{array}\right.

To solve this system using the elimination method, the coordinator observes that the variables do not currently have opposite coefficients. According to the standard procedure for elimination, what mathematical operation must be performed on at least one of the equations to create the necessary opposite coefficients?

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Updated 2026-04-17

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