Set 12: Linear Equations (Advanced)

Choice B is correct. Choice D is the correct answer. 1. Start with the equation: $4x + 2 x - 5 = 19$ 2. Combine like terms: $6x - 5 = 19$ 3. Add 5 to both sides: $6x = 24$ 4. Divide by 6: $x = 4$ 5. Verify: $4(4) + 2(4) - 5 = 16 + 8 - 5 = 19$ ✓ Choice C is incorrect because this results from subtracting 5: $14 /6 = 2.33$. Choice C is incorrect because it results from an error in the solution process. Choice A is incorrect because it results from an error in the solution process.