Răspuns:
Explicație pas cu pas:
0,(3) = 3/9 = 1/3
(0,(3))^2 = (1/3)^2 = 1/9
n = 4/3 - 4/3*(4/3 - 1/9) : 44/9
= 4/3 - 4/3*(12/9 - 1/9) *9/44
= 4/3 - 4/3 *11/9*9/44
= 4/3 - 1/3
= 3/3 = 1
