1. Let's start by understanding your request: you want a clear, step-by-step explanation similar to how teachers write in notebooks. 2. Since you did not specify a particular math problem, I will demonstrate with a simple algebra problem: Solve for $x$ in the equation $2x + 3 = 7$. 3. The formula or method used here is to isolate the variable $x$ by performing inverse operations. 4. Step 1: Subtract 3 from both sides to keep the equation balanced: $$2x + 3 - 3 = 7 - 3$$ which simplifies to $$2x = 4$$ 5. Step 2: Divide both sides by 2 to solve for $x$: $$\frac{2x}{2} = \frac{4}{2}$$ which simplifies to $$x = 2$$ 6. Therefore, the solution to the equation $2x + 3 = 7$ is $x = 2$. This method ensures each step is clear and logical, just like a teacher would write in a notebook.