Select all equations that have one solution.
A. x + x – ( x + x) = 2 x – x + 2
B. 3/4(4 x – 8) = 18
C. 2 x + 2 x + 2 = 4 x + 2
D. –3(– x – 2) = 3( x – 2)
E. 1/2( x) = x + 1/2
NEED HELP ASAP!! THANK YOU