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Solve the system of equations using elimination.
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Indoor Formaldehyde Pollution
The presence of formaldehyde, a toxic chemical, in indoor environments, often originating from building materials, household products, and furnishings, leading to various health risks.
Ulcers
Open sores that can develop on the lining of the stomach, small intestine, or esophagus.
Uranium Decay
The process by which uranium isotopes transform into other isotopes or elements through radioactive decay, releasing radiation.
Indoor Air Pollutant
Airborne substances found indoors that can harm human health, including chemicals, gases, and biological entities.
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