Question

escreva em forma de fraçao a dizima periodica 4,272727

Answer 1

$x=4,272727...\\ x=4+0,272727...\\ x=4+\frac{27}{99}\\ \\ x=\frac{423}{99}$

Answer 2

x = 4,27... 100x = 427,27... ==> 100x - x = 427 - 4  ==> 99x = 423 ==> x = 423/99