一眼出答案计算题

问题：请问下图中的式子答案是多少？

网友1：因为$\sqrt{99}=\sqrt{9\times 11} = 3\sqrt{11}$，所以

$$\begin{align}\frac{\sqrt{99}+\sqrt{99}}{\sqrt{99}}&=\frac{3\sqrt{11}+3\sqrt{11}}{3\sqrt{11}} \\ &=\frac{6\sqrt{11}}{3\sqrt{11}} \\ &=2 \end{align}$$

网友2：这是一个笑话吗？

网友3：你不必多此一举，这只是$$\frac{X+X}{X}=\frac{2X}{X}=2$$😃

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