Make it clear whether you mean
(-2/5)x - 9 < 9/10
-2/(5x) - 9 < 9/10
-2/(5x-9) < 9/10
It makes a difference, and as you can see, online text formatting does not fully reflect what you thought you were saying...
-2/5x-9<9/10
2 answers
both sides are fractions sir.