Solve the systems in Problems 39-56 for all real solutions, using any suitable method. (left{begin{array}{l}5 x+4 y=9
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Solve the systems in Problems 39-56 for all real solutions, using any suitable method.
\(\left\{\begin{array}{l}5 x+4 y=9 \\ 9 x+3 y=12\end{array}ight.\)
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