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Solve the system of equations using elimination.
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Informal
Pertaining to interactions or structures not governed by formal rules, procedures, or policies, often based on personal or casual connections.
Unofficial Communication System
A communication network that operates outside formal channels within an organization, often known as the "grapevine."
Eyeglasses
Optical devices consisting of lenses mounted in a frame that aid in correcting or assisting vision.
Superior
An individual with a higher rank or position who often has supervisory or managerial responsibilities over others.
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