Solve for b
b<-4
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-4b-20>-8-b
Use the distributive property to multiply -4 by b+5.
-4b-20+b>-8
Add b to both sides.
-3b-20>-8
Combine -4b and b to get -3b.
-3b>-8+20
Add 20 to both sides.
-3b>12
Add -8 and 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.
Examples
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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