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Solve the System $\left\{ \begin{aligned}3 x - 4 y & = - 1 \\4 y + 4 z & = 32 \\x + z & = 9\end{aligned} \right.$

Question 71

Multiple Choice

Solve the system.
- $\left\{ \begin{aligned}3 x - 4 y & = - 1 \\4 y + 4 z & = 32 \\x + z & = 9\end{aligned} \right.$

A) $( 4,5,4 )$
B) $\varnothing$
C) $( 5,4,4 )$
D) $( - 5,4 , - 4 )$

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