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We have the following system:
[tex]\begin{gathered} 2x+6y=-4\ldots(A) \\ x+3y=-2\ldots(B) \end{gathered}[/tex]we can see that if we multiply equation B by 2, we get
[tex]\begin{gathered} 2(x+3y=-2) \\ 2x+6y=-4 \end{gathered}[/tex]which is question A. This means that equation A and B are equivalent. In other words, the system has infinitely many solutions.