Răspuns :
1,(6)=(16-1)/9=15/9=5/3
0,1(6)=(16-1)/90=15/90=1/6
1,25=125/100=5/4
____________________
(5/4):(5/4)^2+(5/3)+(1/6)=
(5/4)^-1+(5/3)+(1/6)=
(4/5)+(5/3)+(1/6)=79/30 => D.
1,(6)=(16-1)/9=15/9=5/3
0,1(6)=(16-1)/90=15/90=1/6
1,25=125/100=5/4
____________________
(5/4):(5/4)^2+(5/3)+(1/6)=
(5/4)^-1+(5/3)+(1/6)=
(4/5)+(5/3)+(1/6)=79/30 => D.