Answer
$\lim\limits_{x \to 0}(2\sin{x} - 1) = -1$
Work Step by Step
$\lim\limits_{x \to 0}(2\sin{x} - 1) = 2\lim\limits_{x \to 0}\sin{x} -\lim\limits_{x \to 0}1 = 2(\sin{0}) -1= 0-1= -1$
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