\left\{ \begin{array} { l } { x = 0 } \\ { - 2 y = 0 } \end{array} \right.
Solve for x, y
x=0
y=0
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\left\{ \begin{array} { l } { x = 0 } \\ { - 2 y = 0 } \end{array} \right.
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y=0
Consider the second equation. Divide both sides by -2. Zero divided by any non-zero number gives zero.
x=0 y=0
The system is now solved.
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