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Ciprianonu48
a fost răspuns

calculati fractile :
0,2 + 0,(2) x 0,(3) =
1,1(6) - 0,(21) =

Răspuns :

0,2=2/10
0,(2)=2/9
0,(3)=3/9
0,2+0,(2)x0,(3)=
2/10+2/9x3/9=
2/10+6/9=(2x9+6x10)/90=
(18+60)/90=78/90=simplif cu 2=39/45=13/15

1,1(6)=(116-11)/90=105/90=35/30
0,(21)=21/99=7/33
35/30-7/33=(35x11-7x10)/330
=(385-70)/330=315/330=105/110=21/22

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