Solve for θ
\theta =2\left(\pi -e\right)\approx 0.84662165
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\pi -\frac{\theta }{2}=e
Swap sides so that all variable terms are on the left hand side.
-\frac{\theta }{2}=e-\pi
Subtract \pi from both sides.
-\theta =2e-2\pi
Multiply both sides of the equation by 2.
\frac{-\theta }{-1}=\frac{2e-2\pi }{-1}
Divide both sides by -1.
\theta =\frac{2e-2\pi }{-1}
Dividing by -1 undoes the multiplication by -1.
\theta =2\pi -2e
Divide 2e-2\pi by -1.
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