Answer:
See explanation.
Explanation:
A)

Subtract 2x,

Since this is not a true statement, the answer is no solution. Not infinitely many.
B)

Subtract 2x,

Subtract 5,

x has one solution, not infinitely many.
C)

Subtract 2x,

Add 5,

Again, one solution, not infinitely many.
D)

Subtract 3x,

Since this is a true statement, the answer is infinitely many solutions, or all real numbers.