Respuesta :

[tex] \frac{2x}{4 \pi } + \frac{1-x}{2} =0 \\ \frac{x}{2 \pi } + \frac{1-x}{2} = 0[/tex]
Then we will multiply both sides of the equation by 2 π :
x + π ( 1 - x ) = 0
x + π - π x = 0
x ( 1 - π ) = - π    / · ( - 1 )
x ( π - 1 ) = π
x = π / ( π - 1 )