Question

Ex 1 va rog este urgent !!! Dau coroana !!!

Answer 1

Răspuns:

Explicație pas cu pas:

0,(3)=3/9=1/3

0,(14)=14/99

3,(5)=3 5/9=(9X3+5)/9=(27+5)/9=32/9

15,(12)=15 12/99=15 4/33=(33x15+4)/99=499/99

21,(36)=21 36/99=21 12/33=(33*21+22)/33=715/33

6,(47)=6 47/99=(99x6+47)/99=641/99

7,(21)=7 21/99=7 7/33=(33x7+7)/33=238/33

11,(57)=11 57/99=11 19/33=(33x11+19)/33=382/33

0,0(4)=4/90=2/45

0,1(31)=(131-1)/990=130/990=13/99

0,1(3)=(13-1)/90=12/90=4/30=2/15

1,1(3)=1 (13-1)/90=1 12/90=1 2/15=(15x1+2)/15=17/15

22,5(1)=22 (51-5)/90=22 46/90=22 23/45=(45x22+23)/45=1013/45

0,4(3)=(43-4)/90=39/90=13/30

0,4(15)=(415-4)/990=411/990

1,2(3)=1 (23-2)/90=1 21/90=1 7/30=(30x1+7)/30=37/30