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Use Cramer's Rule to Solve the System of Equations 5x+3z=167x+5y9z=263x7y=45\begin{array} { r r } - 5 x + 3 z & = 16 \\7 x + 5 y - 9 z & = - 26 \\- 3 x - 7 y & = - 45\end{array}

Question 229

Multiple Choice

Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.
5x+3z=167x+5y9z=263x7y=45\begin{array} { r r } - 5 x + 3 z & = 16 \\7 x + 5 y - 9 z & = - 26 \\- 3 x - 7 y & = - 45\end{array}


A) ({2,4,7) }
B) {(6,7,6) }
C) {(1,-6,-7) }
D) {(1,6,7) }

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