Solve for z
z=-9
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3z+9-z=-9
Subtract z from both sides.
2z+9=-9
Combine 3z and -z to get 2z.
2z=-9-9
Subtract 9 from both sides.
2z=-18
Subtract 9 from -9 to get -18.
z=\frac{-18}{2}
Divide both sides by 2.
z=-9
Divide -18 by 2 to get -9.
Examples
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Matrix
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Simultaneous equation
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Limits
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