Solve for u
u=-5
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-\frac{9}{5}u=9
Combine \frac{1}{5}u and -2u to get -\frac{9}{5}u.
u=9\left(-\frac{5}{9}\right)
Multiply both sides by -\frac{5}{9}, the reciprocal of -\frac{9}{5}.
u=-5
Cancel out 9 and 9.
Examples
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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