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Answer two questions about Systems $A$ and $B$ :$\newline$\begin{tabular}{cc} $\newline$System $A$ & System $B$ \\$\newline$ \left\{\begin{array}{l}-2 x+5 y=10 \\\(\newline-3 x+9 y=6\end{array}\right. \) & \left\{\begin{array}{l}-3 x+9 y=6 \\\(\newline-2 x+5 y=10\end{array}\right. \)$\newline$\end{tabular}$\newline$$1$) How can we get System $B$ from System $A$ ?$\newline$Choose $1$ answer:$\newline$(A) Replace one equation with a multiple of the$\newline$(B) Replace one equation with a multiple of itse$\newline$Do $5$ problems