Set 7: Linear Equations (Intermediate)

Explanation

Answer: B

If 3. $5x - 7 = 0$ , what is the value of $x$ ?

3.5

✓ Correct

0.5

Detailed Explanation

Choice B is correct. Choice A is the correct answer. 1. Add 7: $3.5x = 7$ 2. Divide by 3.5: $x = 2$ 3. Verify: $7- 7 = 0$ ✓ 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 D is incorrect because it results from an error in the solution process.

Key Steps:

•

The correct answer is 2

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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