To solve for the value of \( x + y \) under the condition that \( x = y \), we start with the given equation:
\[ 2x + 3y = 5 \]
Substituting \( y \) with \( x \) (since \( x = y \)):
\[ 2x + 3x = 5 \]
Combine like terms:
\[ 5x = 5 \]
Now, divide both sides by 5:
\[ x = 1 \]
Since \( x = y \), we also have:
\[ y = 1 \]
Now we can find \( x + y \):
\[ x + y = 1 + 1 = 2 \]
Thus, the value of \( x + y \) is:
\[ \boxed{2} \]