contestada

Which of these systems of equations has one solution? Select three that apply.
A
2x−7y=−442x−7y=−88

B
6x+8y=656x+9y=65

C
8x−2y=4116x−4y=82

D
9x−3y=−5819x−3y=−58

E
23x+13y=6623x+13y=66

F
25x−12y=7127x−14y=73