Use Cramer's Rule to Solve (If Possible) the System of Equations

question 40

Multiple Choice

Use Cramer's Rule to solve (if possible) the system of equations. $$\left\{ \begin{array} { l } 4 x - 2 y + z = - 3 \\2 x + 2 y + 3 z = 9 \\5 x - 2 y + 6 z = - 15\end{array} \right.$$

• A)(3, -6, -3)
• B)(3, 6, -3)
• C)(-3, 6, -3)
• D)(-3, -6, -3)
• E)(7, -6, -3)

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Smelting

The process of extracting a metal from its ore by using heat and a chemical reducing agent to decompose the ore, removing impurities.

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