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-x-atan(10*x)-atan(2*x)+3.14=0 equation

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                              157    
-x - atan(10*x) - atan(2*x) + --- = 0
                               50    
$$\left(\left(- x - \operatorname{atan}{\left(10 x \right)}\right) - \operatorname{atan}{\left(2 x \right)}\right) + \frac{157}{50} = 0$$
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Numerical answer [src]
x1 = 0.732794532674644
x1 = 0.732794532674644