1. The problem is to evaluate the expression $+\infty + (-\infty)$.\n\n2. In mathematics, $+\infty$ represents positive infinity and $-\infty$ represents negative infinity.\n\n3. Adding positive infinity and negative infinity is an indeterminate form because they represent unbounded quantities in opposite directions.\n\n4. Therefore, $+\infty + (-\infty)$ is undefined and does not have a finite or meaningful value in standard arithmetic.\n\nFinal answer: The expression $+\infty + (-\infty)$ is undefined.