1. This method is very easy to remember steps.
2. Gives an opportunity to find only one needed variable, for example you have system with 3 variables
![x_1, x_2, x_3](https://img.qammunity.org/2019/formulas/mathematics/high-school/qv53revvhfls1befry1i0z37mcjm7dn5bf.png)
and three equations and want to find only
![x_2](https://img.qammunity.org/2019/formulas/mathematics/high-school/6pi08ab255lmqp885b1z3j828qpsx6oau0.png)
. The Cramer's rule allows to do this very quickly and easily.
3. If any of the values of
![x_1, x_2, x_3](https://img.qammunity.org/2019/formulas/mathematics/high-school/qv53revvhfls1befry1i0z37mcjm7dn5bf.png)
are fractions, you do not have to plug in a fraction to find the other values. Each value can be found independently.