Question 57869
8d + 2 < 5d – 7 [Solve for d]
8d + 2 -2< 5d – 7 -2
8d < 5d – 9
8d-5d < 5d-5d – 9
3d <  – 9
3d/3 <  – 9/3
d<-9 
.
Check by plugging in numbers greater than, less than and equal to 9 to check for a truthful statement.