-2/3 +(-1.1/2)+(-2,4)

To simplify the expression \(-\frac{2}{3} + \left(-\frac{1.1}{2}\right) + (-2.4)\), we can convert each term to decimal form for easier addition.

1. Convert \(-\frac{2}{3}\) to decimal: \(-\frac{2}{3} \approx -0.6667\)

2. Convert \(-\frac{1.1}{2}\) to decimal: \(-\frac{1.1}{2} = -0.55\)

3. The third term is already in decimal form: \(-2.4\)

Now, let's add these values together:

\[ -0.6667 - 0.55 - 2.4 \]

Calculating step-by-step:

\[ -0.6667 - 0.55 = -1.2167 \]

Now add \(-2.4\):

\[ -1.2167 - 2.4 = -3.6167 \]

Thus, the final result of the expression is approximately:

\[ \boxed{-3.6167} \]