Solve for b
b<-4
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-3b>20-8
Subtract 8 from both sides.
-3b>12
Subtract 8 from 20 to get 12.
b<\frac{12}{-3}
Divide both sides by -3. Since -3 is negative, the inequality direction is changed.
b<-4
Divide 12 by -3 to get -4.
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