1/2+22,9

To add the two numbers \( \frac{1}{2} \) and \( 22.9 \), you first need to convert \( \frac{1}{2} \) into a decimal form.

\[ \frac{1}{2} = 0.5 \]

Now, add \( 0.5 \) to \( 22.9 \):

\[ 0.5 + 22.9 = 23.4 \]

Thus, \( \frac{1}{2} + 22.9 = 23.4 \).