Set 1: Linear Equations (Advanced)

Explanation

Answer: B

Solve: $5(x + 2) - 3x = 18$

✓ Correct

Detailed Explanation

Choice B is correct. Choice C is the correct answer. 1. Distribute: $5x + 10 - 3 x = 18$ 2. Combine: $2x + 10 = 18$ 3. Subtract 10: $2x = 8$ 4. Divide by 2: $x = 4$ 5. Verify: $5(6) - 12 = 30 - 12 = 18$ ✓ Choice B 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 D is incorrect because it results from an error in the solution process.

Key Steps:

•

The correct answer is 4

Why others are wrong:

A: Choice A 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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