1.

\left. \begin{array} { l } { x - 3 y - 3 = 0 } \\ { 3 x - 9 y - 2 = 0 } \\ { 3 x - 5 y = 20 } \\ { 6 x - 10 y = 40 } \end{array} \right.

Answer»


Discussion

No Comment Found