Perform the indicated operations. Simplify as much as possible. 
If the expression is undefined, answer undefined .
Definitions:
Organ System
An organ system is a group of organs that work together to perform one or more functions, such as the digestive system, respiratory system, or cardiovascular system.
Renal
Pertaining to the kidneys; involved in the process of filtering waste products from the blood and producing urine.
Acid-Base Impairment
A disturbance in the balance between acids and bases in the body, which can affect the function of various organs and processes.
Hydrogen
A colorless, odorless, and highly flammable gas that is the lightest and most abundant element in the universe.
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