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Reasoning with systems of equations

Problem

Answer two questions about Systems A and B:
System Astart text, end textSystem B
{2x+5y=103x+9y=6\begin{cases}-2x+5y=10\\\\-3x+9y=6\end{cases}{3x+9y=62x+5y=10\begin{cases}-3x+9y=6\\\\-2x+5y=10\end{cases}
1) How can we get System B from System A?
Choose 1 answer:
2) Based on the previous answer, are the systems equivalent? In other words, do they have the same solution?
Choose 1 answer:
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