Examlex
Perform the indicated operations involving rational numbers. Express the final answer in reduced form.
Epidemiology
The study of how diseases spread and can be controlled in populations.
Psychology
The scientific study of the mind and behavior, encompassing various aspects of conscious and unconscious experience as well as thought.
Smoking
The act of inhaling and exhaling the smoke of tobacco or other substances, which is a major risk factor for various diseases, including lung cancer.
Lung Cancer
A malignant tumor that forms in the tissues of the lung, often due to smoking or exposure to harmful pollutants.
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