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For which of the following real values of $x$ does:

$$ \frac { 6 }{ x+2 } -\frac { 2 }{ x-2 } =-\frac { 4 }{ { x }^{ 2 }-4 } $$

...where $ x\neq \pm 2 $?

$ -5 $

$1$

$3$

$ -3 $

$\text{No solution}$