Question

Encontrar a geratriz da dizima 0,254254..." ?

Answer 1

$x=0,254254....$
$1000x=254,254254$

$\left \{ {{1000x=254,254254.... } \atop {x=0,254254....}} \right.$

Subtraindo:
$999x=254$ =>
$x=\frac{254}{999}$.