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
5 answers
-13x+12=13x-13
and the other one is??
12x+12=13x+12
there is one more
12x+12=13x-12