How to solve 3x+12-6x<-9

x > 7

Step-by-step explanation:

Group the common factors, which are 3x and - 6x, so it looks like:

3x - 6x + 12 < - 9

-3x + 12 < - 9

Subtract 12 from both sides:

-3x < - 21

Divide everything by - 3 to get your answer. Don't forget when dividing by a negative number, you have to flip the sign:

x > 7