Set 17: Linear Equations (Advanced)

Choice B is correct. Choice C is the correct answer. This multiplication equation requires division to solve. 1. Start with the equation: $4x = 28$ 2. Divide both sides by 4: $x = \frac{28}{4}$ 3. Simplify: $x = 7$ 4. Verify: $4(7) = 28$ ✓ Factor Approach: Notice that $28= 4 \times 7$, so dividing 28 by 4 gives us 7. Choice C is incorrect because this results from subtracting: $28- 4 = 24$. Subtraction is not the inverse of multiplication. Choice D is incorrect because this comes from adding: $28+ 4 = 32$. Addition doesn't undo multiplication either. Choice A is incorrect because this results from multiplying: $28\times 4 = 112$. This compounds the multiplication instead of reversing it with division.