Which of the following equations have infinitely many solutions? 

I.      6(2 x  + 4) = 3(4 x  + 8) 
II.     0.5 (8 x  + 4) = 4 x  + 2 
III.    7 x  + 8 = 7( x  + 8) 
IV.   3 x  + 4 = 7 x  - 2 
V.     2(6 x  + 4) = 4(3 x  + 2)​