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# This exercise has introduced methods for solving systems of equations, including substitution and elimination, and matrix methods such as the Gauss-Jordan method and Cramer's rule. Use each method at least once when solving the systems. Include solutions with nonreal complex number components. For systems with infinitely many solutions, write the solution set using an arbitrary variable.$\begin{array}{r} x+5 y+3 z=9 \\ 2 x+9 y+7 z=5 \end{array}$

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Considering the given, we have three variables but with only two equations. This case of a system of equations has an infinite number of solutions.

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