Question

15 ori 0,(3)
20 ori 0,3(6)​

Answer 1

Răspuns:

15  x  0,(3) = 15 x (3/9) = 15 x (1/3) = 15/3 = 5

20 x  0,3(6) = 20 x (36-3)/90 = 20  x  33/90 = 2 x 33/9 = 66/9 =  7,(3)