$$(-5)\left\{20 -(-2) \times (-8)\right\}$$ = ?
$$(-5)\left\{20 -(-2) \times (-8)\right\}$$
$$(-5)\left\{20 + 2 \times (-8)\right\}$$
$$(-5)\left\{20 - 16\right\}$$
$$(-5)\left\{4\right\}$$
$$-20$$
Option C is correct.
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