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2\pi +x=\pi -x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
2\pi +x+x=\pi
Add x to both sides.
2\pi +2x=\pi
Combine x and x to get 2x.
2x=\pi -2\pi
Subtract 2\pi from both sides.
2x=-\pi
Combine \pi and -2\pi to get -\pi .
\frac{2x}{2}=-\frac{\pi }{2}
Divide both sides by 2.
x=-\frac{\pi }{2}
Dividing by 2 undoes the multiplication by 2.
x=-\frac{\pi }{2}\text{, }x\neq 0
Variable x cannot be equal to 0.