Question

(02.07) solve for m: 18d – 2m 9k < 5k 10.

Answer 1

18d – 2m + 9k < 5k + 10.
Choices: 
m > –7k – 9d + 5
m < –7k – 9d + 5
m > 2k + 9d – 5
m < 2k + 9d – 5

-2m < 5k + 10 - 18d - 9k
-2m < 5k - 9k + 10 - 18d
-2m < -4k + 10 - 18d

Notice when the coefficient of the variable is a negative number, its inequality sign is reversed when it is divided by the negative number. 

m > -4k/-2 + 10/-2 - 18d/-2
m > 2k - 5 + 9d

or 
m > 2k + 9d - 5 ====> 3rd option.