1. Let's consider a simple elementary level problem: Solve for $x$ in the equation $2x + 3 = 7$. 2. The formula we use here is to isolate $x$ by performing inverse operations. 3. First, subtract 3 from both sides: $$2x + 3 - 3 = 7 - 3$$ which simplifies to $$2x = 4$$. 4. Next, divide both sides by 2 to solve for $x$: $$\frac{2x}{2} = \frac{4}{2}$$ which simplifies to $$x = 2$$. 5. So, the solution to the equation $2x + 3 = 7$ is $x = 2$. This method is straightforward and involves basic arithmetic operations suitable for elementary level learners.