\(\displaystyle{ \begin{cases} 2x_{1}+ 5x_{2}+ 4x_{3} + x_{4} = 20 \\ x_{1}+ 3x_{2}+ 2x_{3} + x_{4} = 11\\ 2x_{1}+ 10x_{2}+ 9x_{3} + 7x_{4} = 40 \\ 3x_{1}+ 8x_{2}+ 9x_{3} + 2x_{4} = 37 \end{cases}}\)
moglby mi ktos to bardzo lopatologicznie wyjasnic?? z gory dzieki