A+(46,3-24,91)=80,03-42,9=

To solve the expression \( A + (46.3 - 24.91) = 80.03 - 42.9 \), we need to calculate each part step by step.

First, calculate \( 46.3 - 24.91 \):

\[ 46.3 - 24.91 = 21.39 \]

Next, calculate \( 80.03 - 42.9 \):

\[ 80.03 - 42.9 = 37.13 \]

Now we can substitute these values back into the equation:

\[ A + 21.39 = 37.13 \]

To find \( A \), subtract 21.39 from both sides:

\[ A = 37.13 - 21.39 = 15.74 \]

So, the value of \( A \) is

\[ A = 15.74 \]