First, let's calculate the values inside the parentheses:

-0.75 - 2.6 = -3.35

-19.826 + 8.57 = -11.256

Next, we substitute these values back into the equation:

0.5 * (-3.35) - (-11.256) / 2.01

Now, let's continue solving step by step:

0.5 * (-3.35) = -1.675

-(-11.256) = 11.256

So the equation becomes:

-1.675 - 11.256 / 2.01

Now, let's divide 11.256 by 2.01:

11.256 / 2.01 = 5.6

Finally, the equation becomes:

-1.675 - 5.6 = -7.275

Therefore, the final answer is -7.275.