1. **State the problem:** Solve the equation $$200 - (x - 30) \times 50 = \square$$ for $x$. 2. **Rewrite the equation:** $$200 - 50(x - 30) = \square$$ 3. **Distribute the 50:** $$200 - 50x + 1500 = \square$$ 4. **Combine like terms:** $$1700 - 50x = \square$$ 5. **Isolate the term with $x$:** $$-50x = \square - 1700$$ 6. **Divide both sides by $-50$:** $$x = \frac{\cancel{\square - 1700}}{\cancel{-50}}$$ Since the right side is unspecified (represented by $\square$), the solution for $x$ in terms of $\square$ is: $$x = \frac{1700 - \square}{50}$$ This means for any given value on the right side, you can find $x$ by substituting and simplifying.