Solve for d
d<-7
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d+2<\frac{-15}{3}
Divide both sides by 3. Since 3 is positive, the inequality direction remains the same.
d+2<-5
Divide -15 by 3 to get -5.
d<-5-2
Subtract 2 from both sides.
d<-7
Subtract 2 from -5 to get -7.
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