1.5.33 Systems of algebraic equations
condition: Solve using Cramer's formulas: \[ \left\{\begin{array}{l} 2 x+2 y=7 \\ 2 x-4 y=9 \end{array}\right. \]
Solving systems of algebraic equations by the methods of Gauss, Jordan-Gauss, Cramer and using the inverse matrix. Homogeneous and non-homogeneous systems of equations.