[tex]a) \\ 7,45=\frac{745}{100}=\frac{149}{20}; \\ 0,012=\frac{12}{1000}=\frac{3}{250}; \\ 47,0012=47\frac{12}{10000}=47\frac{3}{2500}; \\ 6 \ 356,32=6 \ 356\frac{32}{100}=6 \ 356\frac{8}{25}; \\ b) \\ 0,(7)=\frac{7}{9}; \\ 0,(22)=\frac{22}{99}=\frac{2}{9}; \\ 2,(14)=2\frac{14}{99}; \\ 1,(16)=1\frac{16}{99}; \\ 0,16(03)=\frac{1603-16}{9900}=\frac{1587}{9900}=\frac{529}{3300};[/tex]
