To solve the given problem, we will follow a step-by-step approach by adding the numbers in parts.
We need to find the sum of the numbers [tex]\(-63\)[/tex], [tex]\(-198\)[/tex], and [tex]\(-11\)[/tex].
1. First, add [tex]\(-63\)[/tex] and [tex]\(-198\)[/tex]:
[tex]\[
-63 + (-198) = -261
\][/tex]
So, the partial sum of the first two numbers is [tex]\(-261\)[/tex].
2. Next, add the result from step 1 to [tex]\(-11\)[/tex]:
[tex]\[
-261 + (-11) = -272
\][/tex]
So, the sum of [tex]\(-63\)[/tex], [tex]\(-198\)[/tex], and [tex]\(-11\)[/tex] is [tex]\(-272\)[/tex].
Therefore, the correct answer is [tex]\(\boxed{-272}\)[/tex].
