Why the answer is B, and why the others tempt you.
**The reasoning**
This is a **linear equation** problem. Let's solve step by step:
5(x − 2) = 15
First, divide both sides by 5 to isolate the bracket:
(x − 2) = 15/5
x − 2 = 3
Now add 2 to both sides:
x = 3 + 2
x = **5**
You can verify: 5(5 − 2) = 5(3) = 15 ✓
**Why the wrong options tempt you**
**Option A (3):** This is what you get if you stop too early — it's the value of (x − 2), not x itself. Don't confuse the intermediate step with your final answer!
**Option C (7):** You might get this if you mistakenly *add* 2 to 15 before dividing: (15 + 2)/5. Wrong order of operations.
**Option D (1):** Possibly from errors like subtracting instead of adding in the final step, or other calculation mix-ups.
**Quick takeaway**
Always complete every step: expand or simplify brackets first, isolate your variable, then solve — and never mistake an intermediate value for your final answer.
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