Răspuns:
Explicație pas cu pas:
4,8 = 48/10 = 24/5
_______
9,12 = 912/100 = 228/25
_______
0,0012 = 12/10000 = 3/2500
________
0,(1) = 1/9
_________
0,(12) = 12/99 = 4/33
_________
2,(34) = (234 - 2)/99 = 232/99
_________
3,(14) = (314 - 3)/99 = 311/99
_________
0,23(15) = (2315 - 23)/9900 = 2292/9900 = 764/3300
_________
1,5(14) = (1514 - 15)/990 = 1499/990
_________
12,0(12) = (12012 - 120)/990 = 11892/990 = 3964/330 = 1982/165
