1. The problem asks to find the value of $x$ in the equation $3x - 7 = 11$. 2. The formula used here is to isolate $x$ by performing inverse operations. 3. First, add 7 to both sides to cancel out the $-7$ on the left: $$3x - 7 + 7 = 11 + 7$$ $$3x = 18$$ 4. Next, divide both sides by 3 to solve for $x$: $$\frac{3x}{3} = \frac{18}{3}$$ $$x = 6$$ 5. So, the solution to the equation is $x = 6$. This means when $x$ is 6, the original equation holds true.