Solve for z
z=-\frac{x\left(x-3\right)}{7}
Solve for x
x=\frac{-\sqrt{9-28z}+3}{2}
x=\frac{\sqrt{9-28z}+3}{2}\text{, }z\leq \frac{9}{28}
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x^{2}+7z=3x
Swap sides so that all variable terms are on the left hand side.
7z=3x-x^{2}
Subtract x^{2} from both sides.
\frac{7z}{7}=\frac{x\left(3-x\right)}{7}
Divide both sides by 7.
z=\frac{x\left(3-x\right)}{7}
Dividing by 7 undoes the multiplication by 7.
Examples
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Simultaneous equation
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Limits
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