Question

Which of the following equations have infinitely many solutions ​

Answer 1

C & D

Explanation:

C & D become x = x, algebraically.

X = X would mean x has no finite answer, thus x could be anything. (1 = 1, 2 = 2, 3 = 3, etc..)

In the other two, the solutions would create x = 0, which is one finite solution.