Simple,
just go with the flow,
18d-2m+9k<5k+10
-9k -9k
18d-2m<-4k+10....
18d-2m<-4k+10
-18d -18d
-2m<-18d-4k+10
Now, divide.. (but remember when dividing by a negative the sign gets flipped)
[tex] \frac{-2m}{-2} \ \textless \ \frac{-18d-4k+10}{-2}
[/tex]
Thus, m>9d+2k-5.
Your answer.. :D
