Question

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

Answer 1

0,12(31)=$\frac{1231-12}{9900} = \frac{1219}{9900}$

1,2(13)=$\frac{1213-12}{990}= \frac{1201}{990}$

2,3(7)=$\frac{237-23}{90} = \frac{214}{90}$

0,(13)=$\frac{13}{99}$