If $\dfrac{x+5}{2} = 9$, then $x$ is

If $\dfrac{x+5}{2} = 9$, then $x$ is
  1. $13$
  2. $11$
  3. $\dfrac{13}{2}$
  4. $4$

Solution

$x + 5 = 18 \Rightarrow x = 13$.

Asked in: IMO

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