Solve the System by Using the Inverse of the Coefficient $$\begin{array} { c } - 3 x - y - 8 z = - 36 \\- 6 x - 7 z = - 34 \\5 y + z = 9\end{array}$$

question 280

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { c } - 3 x - y - 8 z = - 36 \\- 6 x - 7 z = - 34 \\5 y + z = 9\end{array}$$

• A) \(\{ ( 1,4,1 ) \}\)
• B) \(\{ ( - 1,1,2 ) \}\)
• C) \(\{ ( 1,1,4 ) \}\)
• D) \(\varnothing\)

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