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Exprimati sub forma de fractii ordinare ireductibile:
a.4,(2)%
b.6,(5)%
c.2,1(3)%
d.2,10(3)%


Răspuns :

a)4,(2)%=(42-4)/9%=[38/9]%=38/9x100=38/900=simplif.cu 2=19/450=0,04(2)
b)6,(5)%=[(65-6)/9]%=59/900=0,06(5)
c)2,1(3)%=[(213-21)/90]%=192/9000=0,021(3)
d)2,10(3)%=[(2103-210)/900]%=1893/90000=0,0210(3)