Problem 3 - Entrance Test

To solve the equation, we need to isolate x on one side. We start by subtracting 5 from both sides of the equation: 2x + 5 - 5 = 11 - 5, which simplifies to 2x = 6. Next, we divide both sides by 2 to find x: 2x/2 = 6/2, giving us x = 3.