Set 1: Linear Equations (Advanced)

Explanation

Answer: A

Solve: 0. $5x + 2 = 7$

✓ Correct

2.5

Detailed Explanation

Choice A is correct. Choice C is the correct answer. 1. Subtract 2: $0.5x = 5$ 2. Divide by 0.5: $x = 10$ 3. Verify: $0.5(10) + 2 = 5 + 2 = 7$ ✓ Choice D is incorrect because it results from an error in the solution process. 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.

Key Steps:

•

The correct answer is 10

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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