Question

D minus 2 is less than -1. what is the inequality?

Answer 1

D - 2 < -1

D < -1 + 2 -2 crosses the inequality sign and it changes to +2

D < 2 - 1

D < 1. This is the inequality.

I hope this helps.

Answer 2

d-2<-1

d minus (-) 2 is less (<) than -1

if told to solve inequality
d<-1+2
d<1