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Solve the system of equations by the elimination method.
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Ratio
A mathematical relationship that compares two numbers or quantities, indicating how many times one value contains or is contained by the other.
Frequencies
The number of times an event occurs within a specified period, often used in the context of waves or signals.
Categorical Statistics
A branch of statistics that deals with variables that can be categorized into distinct groups and analyzes the frequency and distribution of these categories.
Class Relations
The ways in which classes (or sets) relate to each other, including inclusion, exclusion, and intersection relationships.
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