Question

sendo x=0,30 30 30...e y=1,222.. expresse sob a forma de fração

Answer 1

Dizima 

$x=0,303030... \\ x= \frac{30}{99} = \frac{10}{33} \\ \\ y=1,222... \\ y=1 \frac{2}{9} = \frac{11}{9}$