Which of the following equations have exactly one solution? Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
2x-31=2x-312x−31=2x−312, x, minus, 31, equals, 2, x, minus, 31

(Choice B)
B
2x-31=-2x-312x−31=−2x−312, x, minus, 31, equals, minus, 2, x, minus, 31

(Choice C)
C
2x+31=2x-312x+31=2x−312, x, plus, 31, equals, 2, x, minus, 31

(Choice D)
D
2x-2=2x-312x−2=2x−31