Question type GGB - log v2

ajouter ce texte en feedback général $${a}×{b}^x={c}$$ $$log({b}^x) = log(\frac{{c}}{{a}})$$ $$log({b}^x)= {=round( log({c}/{a}) , 3)}$$ $$x×log({b}) = {=round( log({c}/{a}) , 3)}$$ $$x×{=round( log({b}) ,3 )} = {=round( log({c}/{a}) , 3)}$$ $$x = \frac { {=round( log({c}/{a}) , 3)} }  { {=round( log({b}) ,3 )} }$$ $$x =  {=round( (round( log({c}/{a}) , 3)) / (round( log({b}) ,3 )) , 3) }$$