Solved

Solve Using Cramer's Rule $\begin{array} { r } 3 x - 7 y - z = - 40 \\x - 4 y - 5 z = - 36 \\- 9 x + y + z = - 44\end{array}$

Question 22

Multiple Choice

Solve using Cramer's rule.
- $\begin{array} { r } 3 x - 7 y - z = - 40 \\x - 4 y - 5 z = - 36 \\- 9 x + y + z = - 44\end{array}$

A) $( 6 , - 8 , - 2 )$
B) $( 7,6,2 )$
C) $( 6,8,2 )$
D) $( 8,2,8 )$

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