$$(-10)\times(7+(-3))=((-10\times7))+((-10)\times(-3)$$
$\text{false}$
$$-10\left(-26\right)=-10\times 7-10\left(-3\right)$$
$$260=-10\times 7-10\left(-3\right)$$
$$260=-70+30$$
$$260=-40$$
$$\text{false}$$
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