1. The problem is to solve a math question and explain it simply. 2. Since no specific problem was given, I will explain how to solve a simple algebra problem: solving for $x$ in $2x + 3 = 7$. 3. The formula used is to isolate $x$ by undoing addition and multiplication. 4. First, subtract 3 from both sides: $$2x + 3 - 3 = 7 - 3$$ which simplifies to $$2x = 4$$. 5. Next, divide both sides by 2: $$\frac{2x}{2} = \frac{4}{2}$$ which simplifies to $$x = 2$$. 6. So, the answer is $x = 2$. 7. This means if you put 2 back into the original equation, it works: $2(2) + 3 = 4 + 3 = 7$. 8. This is how you solve simple equations by doing the opposite operations step by step.