First, we simplify the subtraction of a negative number by adding the opposite:
(-5) + (-4) + 11 + 8.8
Now, we add the numbers:
(-9) + 11 + 8.8
Now, we add the positive numbers first:
11 + 8.8 = 19.8
Now, we add the negative number:
(-9) + 19.8 = 10.8
Therefore, the final answer is 10.8.
First, we simplify the subtraction of a negative number by adding the opposite:
(-5) + (-4) + 11 + 8.8
Now, we add the numbers:
(-9) + 11 + 8.8
Now, we add the positive numbers first:
11 + 8.8 = 19.8
Now, we add the negative number:
(-9) + 19.8 = 10.8
Therefore, the final answer is 10.8.