Solve for z
z = -\frac{21}{4} = -5\frac{1}{4} = -5.25
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3\times 9-\left(-4z-3\right)=9
Add 2 and 7 to get 9.
27-\left(-4z-3\right)=9
Multiply 3 and 9 to get 27.
27-\left(-4z\right)-\left(-3\right)=9
To find the opposite of -4z-3, find the opposite of each term.
27+4z-\left(-3\right)=9
The opposite of -4z is 4z.
27+4z+3=9
The opposite of -3 is 3.
30+4z=9
Add 27 and 3 to get 30.
4z=9-30
Subtract 30 from both sides.
4z=-21
Subtract 30 from 9 to get -21.
z=\frac{-21}{4}
Divide both sides by 4.
z=-\frac{21}{4}
Fraction \frac{-21}{4} can be rewritten as -\frac{21}{4} by extracting the negative sign.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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