[tex]a) 1,23=\frac{123}{100}[/tex]
[tex]b) 34,5678 = \frac{345678}{10000}[/tex]
[tex]c) 1,(3)=\frac{13-1}{9} = \frac{12}{9}[/tex]
[tex]d) 15,(72) = \frac{1572-15}{99} = \frac{1557}{99}\\[/tex]
[tex]e) 10,(234) = \frac{10234-10}{999} =\frac{10224}{999}[/tex]
[tex]f) 1,2(3) = \frac{123-12}{90}=\frac{111}{90}[/tex]
[tex]g) 0,12(34) =\frac{1234-12}{9900}= \frac{1222}{9900}\\[/tex]
[tex]h) 2,3(45) = \frac{2345-23}{990}=\frac{2322}{990}[/tex]
[tex]i) 5,01(02) = \frac{50102-501}{9900}=\frac{49601}{9900}[/tex]
[tex]j) 13,14(15) = \frac{131415-1314}{9900}=\frac{130101}{9900}[/tex]
