7. For which system is (-3, 5) the solution?
(2x + y = -1
x + 2y = 7
(5x - 3y = 12
(2x + 3y = 18
A. {2x
C.
(4x - 3y = -27
2x + 4y = 12
B
B.
D.
C
(3x + 2y = 1
16x - 4y =