Question

que es mayor 1/3 o 1/9

Answer 1

Tenemos.

Multiplicas en cruz

1/3  --- 1/9 =
(1 * 9)--- (1 * 3)
   9      >    3

Luego
1/3 > 1/9

Answer 2

$\frac{1}{3} \ \textgreater \ \frac{1}{9}$

9 > 3

$\frac{1}{3}$   es mayor