Final answer:
The final answer is -0.5.
Step-by-step explanation:
The expression -1/2 x 1 can be solved using the order of operations.
First, multiply the numbers in the numerator and then divide by 2.
Using the negative sign, the expression becomes (-1 x 1) /2.
Multiplying the numbers in the numerator gives -1.
Dividing by 2 gives the final answer of -0.5.