-1/2 * 1-2

To simplify the expression \(-\frac{1}{2} \times (1 - 2)\), follow these steps: 1. Calculate \(1 - 2\): \[ 1 - 2 = -1 \] 2. Now substitute \(-1\) back into the expression: \[ -\frac{1}{2} \times -1 \] 3. Multiply \(-\frac{1}{2}\) by \(-1\): \[ -\frac{1}{2} \times -1 = \frac{1}{2} \] Thus, the final result is \(\frac{1}{2}\).