Step-by-step explanation:
So, did you mean like no solution as in unsolvable? If so, please comment and I'll try to help below.
if you meant one that's like just a question without an answer, then here:
assuming you mean two step equation:
-5W+7=-18 w=? or -18= -5W+7
or here:
-2x+4=14 x=? or 14= -2x+4
if that's not it, please comment below and I'll try to help as best as I can.