|4*(-14)|/(-12)

$$\frac{|\mathbf{4*(-14)}|}{(-12)}$$

$$\frac{|-48|}{-12}$$

Absolute values make everything inside them positive:

$$\frac{48}{-12}$$

Move the minus sign to the outside:

$$-\frac{48}{12}$$

divide the top and bottom by 12

$$-\frac{48\div12}{12\div12}$$

$$-\frac{4}{1}$$

$$\mathbf{-4}$$