ແກ້ 40mn=25m^2n

$$40 mn = 25 m ^ { 2 } n$$

ແກ້ສຳລັບ n

$$\left\{\begin{matrix}\\n=0\text{, }&\text{unconditionally}\\n\in \mathrm{R}\text{, }&m=\frac{8}{5}\text{ or }m=0\end{matrix}\right,$$

ຂັ້ນຕອນສຳລັບການແກ້ສົມຜົນເສັ້ນຊື່

ລົບ 25m^{2}n ອອກຈາກທັງສອງຂ້າງ.

$$40mn-25m^{2}n=0$$

ຮວມທຸກຄຳສັບທີ່ມີ n.

$$\left(40m-25m^{2}\right)n=0$$

ຫານ 0 ດ້ວຍ 40m-25m^{2}.

$$n=0$$

ແກ້ສຳລັບ m

$$\left\{\begin{matrix}\\m=\frac{8}{5}=1,6\text{; }m=0\text{, }&\text{unconditionally}\\m\in \mathrm{R}\text{, }&n=0\end{matrix}\right,$$