1,55= [tex]\dfrac{115}{100}[/tex]= [tex]\dfrac{23}{20}[/tex]
4,05= [tex]\dfrac{405}{100}[/tex]= [tex]\dfrac{81}{20}[/tex]
1,(02)= [tex]\dfrac{102-1}{99}[/tex]= [tex]\dfrac{101}{99}[/tex]
2,6= [tex]\dfrac{26}{10}[/tex]= [tex]\dfrac{13}{5}[/tex]
0,40(05)= [tex]\dfrac{4005-40}{9900}[/tex]= [tex]\dfrac{3965}{9900}[/tex]= [tex]\dfrac{793}{1980}[/tex]
