$$(-12) \times [(-4)-9]=[(-12)]-[(-4)]-[(-12) \times 9]$$
$\text{false}$
$$-12\left(-13\right)=-12-\left(-4\right)-\left(-12\times 9\right)$$
$$156=-12-\left(-4\right)-\left(-12\times 9\right)$$
$$156=-12+4-\left(-12\times 9\right)$$
$$156=-8-\left(-12\times 9\right)$$
$$156=-8-\left(-108\right)$$
$$156=-8+108$$
$$156=100$$
$$\text{false}$$
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