Which THREE systems of linear equations are solved correctly? A)
If x + y = 3 and 2x + y = 12, then x = 9 and y = -6.
If 5x + y = 10 and x + 2y = 8, then x = .
10
B)
4
and y= 3
10
Ž and y=
C)
3
If x + y = 7 and 6x + 2 = 2, then x =
11
2
D)
If 2x + 2y = 4 and x - 4y = 12, then x = 4 and y = -2.
E
If 2x - 4y = 4 and x - 6y = 10, then x = 2 and y = 2.