5

Set 4: Linear Equations (Advanced)

Explanation

Answer: B

Solve: 52x=10\frac{5}{2}x = 10

A.

20

B.

4

✓ Correct
C.

25

D.

2

Detailed Explanation

Choice B is correct. Choice B is the correct answer. 1. Multiply by 2: 5x=205x = 20 2. Divide by 5: x=4x = 4 3. Verify: 52(4)=5(2)=10\frac{5}{2}(4) = 5(2) = 10 ✓ 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. Choice A 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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