Try another version of this question Write the system of equations as an augmented matrix. `{(-x,-,u,+,4y,=,45),(2x,-,6u,+,2y,=,-12),(5x,-,4u,-,2y,=,-9):}` Box 1: Enter each element of the matrix as number (like 5, -3, 2.2)
`[(-1,-1,4,45),(2,-6,2,-12),(5,-4,-2,-9)]`