Solve for x
x<-6
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6x+21<-15
Combine 10x and -4x to get 6x.
6x<-15-21
Subtract 21 from both sides.
6x<-36
Subtract 21 from -15 to get -36.
x<\frac{-36}{6}
Divide both sides by 6. Since 6 is positive, the inequality direction remains the same.
x<-6
Divide -36 by 6 to get -6.
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