Question 55049
You find the answer by stating all the values that x can be to make the statement true. 

I'll work a similar problem because I don't want to do your homework for you. 

My problem will be -3x + 12 < -9

I want to solve for x in the same way that I did for simple equality problems. However, I have to be carefull in inequalities because greater/less than signs reverse when I multiply or divide both sides of the equation by a negative number. 

Ok...-3x + 12 < -9

I'll subtract 12 from both sides leaving 
-3x < -21

Now, I'll divide both sides by -3 
x > 7 (note sign flippage)