GREQuantitative ReasoningAlgebra

If 2x = 18, then x + 5 =

A9
B14CORRECT
C13
D23
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Why the answer is B, and why the others tempt you.
**The reasoning** Start by solving for x in the equation 2x = 18. Divide both sides by 2: x = 18 ÷ 2 = 9 Now the question asks for x + 5, not just x: x + 5 = 9 + 5 = **14** This tests **two-step problem solving** — first find the variable, then use it to answer what's actually being asked. **Why the wrong options tempt you** - **Option A (9)** — This is the trap! You stopped after finding x = 9 and forgot to add 5. The question didn't ask for x; it asked for x + 5. Always read what the question is *actually* asking for. - **Options C (13) and D (23)** — These come from calculation errors, like adding incorrectly (9 + 4 = 13) or misreading the original equation as 2x = 28. **Quick takeaway** Finding x is only half the battle — always check what the question is asking you to calculate with that x!
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