Solve the System by Using the Inverse of the Coefficient $$\begin{array} { c } 9 x - 5 y - z = 39 \\x + 7 y + 2 z = 56 \\3 x + y + z = 33\end{array}$$

question 235

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { c } 9 x - 5 y - z = 39 \\x + 7 y + 2 z = 56 \\3 x + y + z = 33\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( - 8,6,16 ) \}\)
• C) \(\{ ( 8,6,3 ) \}\)
• D) \(\{ ( 8,3,6 ) \}\)

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