Solve for a
a<-3
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30-6a<-15-21a
Use the distributive property to multiply -3 by 5+7a.
30-6a+21a<-15
Add 21a to both sides.
30+15a<-15
Combine -6a and 21a to get 15a.
15a<-15-30
Subtract 30 from both sides.
15a<-45
Subtract 30 from -15 to get -45.
a<\frac{-45}{15}
Divide both sides by 15. Since 15 is positive, the inequality direction remains the same.
a<-3
Divide -45 by 15 to get -3.
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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