Question

forma fracionaria das dizimas 1,999...

Answer 1

1,999...

$1 \frac{9}{9} = \frac{1 \times 9 + 9}{9} = \frac{18}{9}$

Answer 2

vamos lá!

0,999...

x=0,999...

10x=9,999...

10x=9,999...
-x=0,999

9x=9

x=9/9

1,999..=1+9/9=9+9/9=18/9


espero ter ajudado!

bom dia !