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Calculeaza: b=[11,2(3) - 9,(2)] •9 - 1 pe 100= ?

Răspuns :

11,2(3)=11 intregi si (23-2)/90= 11 intregi 21/90=1011/90
9,(2)=9 intregi si 2/9=83/9
(1011/90-83/9)x9-1/100=
(1011-830)/90x9-1/100=
181/90x9-1/100=
181/10-1/100=
(1810-1)/100=
1809/100=
18,09