Answer:
We add 11 to both sides
General Formulas and Concepts:
Pre-Algebra
Step-by-step explanation:
Step 1: Define equation
x - 11 = 9
Step 2: Identify
We need to isolate x, and to do so, we have to get rid of the -11 on the left side. We should add 11 to both sides to isolate x and to get our answer.