Answer:
(9/4, 3/5, 2/3, -9/5)
Step-by-step explanation:
If we have the following augmented matrix of a system of equations:
1 0 0 0 a
0 1 0 0 b
0 0 1 0 c
0 0 0 1 d
The solution of the system is (a, b, c, d)
So, in this case, the solution of the system is: (9/4, 3/5, 2/3, -9/5)