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Solve for y (complex solution)
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-3x-4=-y^{2}
Subtract y^{2} from both sides. Anything subtracted from zero gives its negation.
-3x=-y^{2}+4
Add 4 to both sides.
-3x=4-y^{2}
The equation is in standard form.
\frac{-3x}{-3}=\frac{4-y^{2}}{-3}
Divide both sides by -3.
x=\frac{4-y^{2}}{-3}
Dividing by -3 undoes the multiplication by -3.
x=\frac{y^{2}-4}{3}
Divide -y^{2}+4 by -3.