Answer: Options A, B, and C have infinite solutions.
Explanation:
A ) 6x + 5 - 2x = 4 +4x +1
⇒ 4x + 5 = 4x + 5
B) -(2x + 3) = -2x - 6
⇒ -2x - 6 = -2x - 6
C) 4(2x - 1) = 6x - 4 +2x
⇒ 8x - 4 = 8x - 4
D) 6x -(3x + 8 ) = 16
⇒ 3x = 24
⇒ x = 8
Hence, A, B, and C all have infinite solutions but D has an exact solution.