\(\left(x-3\right):2=\dfrac{514}{512}\)
\(\Rightarrow\left(x-3\right):2=\dfrac{257}{256}\)
\(\Rightarrow x-3=\dfrac{257}{128}\)
\(\Rightarrow x=\dfrac{641}{128}\)
\(\left(x-3\right):2=\dfrac{514}{512}\)
\(\Leftrightarrow x-3=\dfrac{257}{128}\)
hay \(x=\dfrac{641}{128}\)