Solve for x
x<-21
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-x-15>6
Multiply both sides of the equation by 3. Since 3 is positive, the inequality direction remains the same.
-x>6+15
Add 15 to both sides.
-x>21
Add 6 and 15 to get 21.
x<-21
Divide both sides by -1. Since -1 is negative, the inequality direction is changed.
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