SOLUTION: Solve using the multiplication principal.
-3x<-12
The solution is {x|x _ _}
Algebra.Com
Question 158279: Solve using the multiplication principal.
-3x<-12
The solution is {x|x _ _}
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given inequality
Multiply both sides by (which is the multiplicative inverse of -3) to isolate "x".
Note: multiplying both sides by a negative number will change the sign from a "less than" sign to a "greater than" sign.
Multiply
Reduce
So the solution set is 
Also the answer in interval notation is )
Here's the graph of the solution set
Note: the endpoint is an open circle
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