8

Set 8: Linear Equations

Explanation

Answer: D

Solve: 4(x+5)10=304(x + 5) - 10 = 30

A.

0

B.

15

C.

10

D.

5

✓ Correct

Detailed Explanation

Choice D is correct. Choice Ahoice D is the correct answer. 1. Add 10: 4(x+5)=404(x + 5) = 40 2. Divide by 4: x+5=10x + 5 = 10 3. Subtract 5: x=5x = 5 4. Verify: 4(5+5)10=4010=304(5 + 5) - 10 = 40 - 10 = 30 ✓ Choice Ahoice C is incorrect because it results from an error in the solution process. Choice Ahoice D is incorrect because it results from an error in the solution process. Choice Ahoice C is incorrect because it results from an error in the solution process.

Key Steps:

The correct answer is 5

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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