Identify which equations have one solution, infinitely many solutions, or no solutions.
A. 3/2x + 2.3 - 1/2x = 4.3 + x
B. 17/4 + 4.2y - 9/4 = 2.2y + 6 + 2y - 4
C. -2z + 2 + 4z = 16/5 + 2z - 6/5
D. 2x + 2/3 = 2x + 4/5 - 4x
E. 5r + 2 = 6r + 3 - r
F. 3.2p - 2.5 + 2.1p = 5p - 7/2