1.2.15 Determinant calculation
Condition: Solve a system of linear equations using Cramer's methods. \[ \left\{\begin{array}{c} 3 x-y+2 z=8 \\ -x+4 y+7 z=-9 \\ 2 x-3 z=7 \end{array}\right. \]
Calculation of determinants - both simple and complex, both low orders and higher ones.