Монгол Бодлогын Сан

Заавар: $\Big(\dfrac{a}{b}\Big)^{-1}=\dfrac{b}{a}$ ба $\dfrac{a}{b}:\dfrac{c}{d}=\dfrac{a}{b}\cdot\dfrac{d}{c}$ байдаг.

Бодолт: $$\begin{gather*} \left(\dfrac{1-\frac13}{1+\frac13}\right)^{-1}\div\dfrac{1+\frac{1}{1+\frac14}}{1-\frac14}=\left(\dfrac{\frac23}{\frac43}\right)^{-1}\div\dfrac{\frac95}{\frac34}=\\ =\left(\dfrac12\right)^{-1}\div\dfrac{12}{5}=\dfrac21\cdot\dfrac{5}{12}=\dfrac56 \end{gather*}$$

Жич: $\div$-ээр хуваах үйлдлийг тэмдэглэдэг.