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Cum transform numerele periodice in fractii ordinare : 0,12(31) ; 1,2(13) ; 2,3(7), 0,(13)

Răspuns :

0,12(31)=[tex] \frac{1231-12}{9900} = \frac{1219}{9900} [/tex]

1,2(13)=[tex] \frac{1213-12}{990}= \frac{1201}{990} [/tex]

2,3(7)=[tex] \frac{237-23}{90} = \frac{214}{90} [/tex]

0,(13)=[tex] \frac{13}{99} [/tex]