1/2х(-3,6)-5

Let's simplify the expression \( \frac{1}{2} x (-3.6) - 5 \).

1. Multiply \(\frac{1}{2}\) by \(-3.6\): \[ \frac{1}{2} \times (-3.6) = -1.8 \]

2. Now we substitute this back into the expression: \[ -1.8x - 5 \]

The simplified expression is: \[ -1.8x - 5 \]