1. The problem is to simplify the expression $+5 + (+4,1)$. 2. Notice that the expression contains a comma, which is not a standard arithmetic operator. It might be a typo or a formatting error. Assuming the user meant $+5 + (+4.1)$, which is adding 5 and 4.1. 3. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum. 4. Applying the formula: $$+5 + (+4.1) = 5 + 4.1 = 9.1$$ 5. Therefore, the simplified result is $9.1$.