Solve the system of linear equations by the substitution method. 
Definitions:
Presentation
A means of communication that typically involves speaking to an audience with or without the aid of visual or auditory supports, aiming to inform, persuade, or entertain.
Quality Color Visuals
High-standard visual materials that make effective use of color to enhance clarity, engagement, and aesthetic appeal in communication.
Hue
A color or shade in the spectrum, recognized through the primary properties of colors such as red, blue, or yellow.
Saturation
A point at which no additional information adds value to a research study or data set because enough information has been collected to understand the phenomenon.
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