Write the augmented matrix for each system of equations.
- 2x - 2y + 5z - 1
-Sx - 5y + 72 - 4
9x - 2y + 2z = -1
a
c.
-2 -2
5
1
-2 -2
-5 -5
7
0
0
7:4
9 2
0
0
0:-
b.
d.
-2
-2 -25
-2 -5:-
-5 -5 7 : 4
5
7
9
2
-2 2-1
4

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