-2×1/4

To calculate \(-2 \times \frac{1}{4}\):

\[ -2 \times \frac{1}{4} = \frac{-2 \times 1}{4} = \frac{-2}{4} = -\frac{1}{2} \]

So, \(-2 \times \frac{1}{4} = -\frac{1}{2}\).