Question

Which one of these equations have only 1 solution?

-13x+12=13x-13
12x+12=13x-12
12x+12=13x+12
-13x+12=13x+13

Answers

GPT 3.5
-13x+12=13x-13
Some How Passing
and the other one is??
GPT 3.5
12x+12=13x+12
Some How Passing
there is one more
GPT 3.5
12x+12=13x-12