Set 11: Linear Equations (Advanced)

Explanation

Answer: D

If 0. $3x + 0.2x = 5$ , what is the value of $x$ ?

✓ Correct

Detailed Explanation

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

Key Steps:

•

The correct answer is 10

Why others are wrong:

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

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

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

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