1. Stating the problem: Simplify the expression $5 + (-11) - (-11)$.\n\n2. Recall the rules: Adding a negative number is the same as subtracting the positive number, and subtracting a negative number is the same as adding the positive number.\n\n3. Rewrite the expression using these rules: $$5 + (-11) - (-11) = 5 - 11 + 11$$\n\n4. Simplify step-by-step: $$5 - 11 + 11 = (5 - 11) + 11 = -6 + 11$$\n\n5. Final calculation: $$-6 + 11 = 5$$\n\nTherefore, the simplified value of the expression is $5$.