# How do you simplify \frac { x \cdot ( x - 1) } { 4x - 4}?

$\frac{x}{4}$
$\frac{x \cdot \left(x - 1\right)}{4 x - 4}$
factor $4 x - 4 \to 4 \left(x - 1\right)$
$= \frac{x \cdot \cancel{\left(x - 1\right)}}{4 \cancel{\left(x - 1\right)}} = \frac{x}{4}$