Solve for x
x>12
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x+9-3x<-15
Subtract 3x from both sides.
-2x+9<-15
Combine x and -3x to get -2x.
-2x<-15-9
Subtract 9 from both sides.
-2x<-24
Subtract 9 from -15 to get -24.
x>\frac{-24}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
x>12
Divide -24 by -2 to get 12.
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