Question

Scrieti sub forma de fractie numarul zecimal periodic simplu
a)0,(15)
b)0,(231)
c)2,(9)
d)12,(12)

Answer 1

0,(15)=15/99=5/33
0,(231)=231/999=77/333
2,(9)=27/9=3
12,(12)=1200/99=400/33

Answer 2

a)0,(15)=15supra99
b)0,(231)=231supra999
c)2,(9)=29-2supra9
d)12,(12)=1212-12supra99