Solve for y
y=\frac{x^{2}+30}{7}
Solve for x (complex solution)
x=-\sqrt{7y-30}
x=\sqrt{7y-30}
Solve for x
x=\sqrt{7y-30}
x=-\sqrt{7y-30}\text{, }y\geq \frac{30}{7}
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-7y+30=-x^{2}
Subtract x^{2} from both sides. Anything subtracted from zero gives its negation.
-7y=-x^{2}-30
Subtract 30 from both sides.
\frac{-7y}{-7}=\frac{-x^{2}-30}{-7}
Divide both sides by -7.
y=\frac{-x^{2}-30}{-7}
Dividing by -7 undoes the multiplication by -7.
y=\frac{x^{2}+30}{7}
Divide -x^{2}-30 by -7.
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