Solve the System $$\left\{ \begin{aligned}x + y & = - 7 \\2 x - 2 y + 3 z & = 13 \\x - z & = - 9\end{aligned} \right.$$

question 122

Multiple Choice

Solve the system.
- $$\left\{ \begin{aligned}x + y & = - 7 \\2 x - 2 y + 3 z & = 13 \\x - z & = - 9\end{aligned} \right.$$

• A) \(( - 4,5 , - 3 )\)
• B) \(( - 4 , - 3,5 )\)
• C) \(( 5 , - 4 , - 3 )\)
• D) \(( 5 , - 3 , - 4 )\)

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Definitions:

Alcohol

A psychoactive substance found in drinks like beer, wine, and spirits, known for its effects on mood, behavior, and health.

Nicotine

Alkaloid found in tobacco; operates on both the central and peripheral nervous systems, resulting in the release of biochemicals, including dopamine, norepinephrine, serotonin, and the endogenous opioids.

Central Nervous System

The part of the nervous system that consists of the brain and spinal cord, responsible for integrating sensory information and responding accordingly.

Depressant

A substance that reduces the functional or nervous activity, often used to describe drugs that inhibit the central nervous system, leading to sedation or relaxation.