1. The problem is to provide a step-by-step explanation for a math question, but since no specific question was given, I will demonstrate how to solve a simple algebraic equation step-by-step. 2. Let's solve the equation $2x + 3 = 11$. 3. The formula used here is to isolate the variable $x$ by performing inverse operations. 4. First, subtract 3 from both sides: $$2x + 3 - 3 = 11 - 3$$ which simplifies to $$2x = 8$$ 5. Next, divide both sides by 2 to solve for $x$: $$\frac{2x}{2} = \frac{8}{2}$$ which simplifies to $$x = 4$$ 6. Therefore, the solution to the equation $2x + 3 = 11$ is $x = 4$. This method can be applied to similar linear equations to find the value of the unknown variable.