## Precalculus (6th Edition)

$\color{blue}{-\dfrac{5}{2} \text{ or } -2.5}$
Substitute the given values of the variables to obtain: $=\dfrac{3|-2|-4|4|}{|-1(4)|} \\=\dfrac{3(2)-4(4)}{|-4|} \\=\dfrac{6-16}{4} \\=\dfrac{-10}{4} \\=\color{blue}{-\dfrac{5}{2} \text{ or } -2.5}$