Question 150523
3.2x<2x-(9-1.2x)
3.2x<2x-9+1.2x
3.2x-2x-1.2x<-9
.2x<-9
x<-9/.2
x<-18 answer.
proof:
let x=-19
3.2*-19<2*-19-(9-1.2*-19)
-60.8<-36-9+22.8
-60.8<-22.2