x=0,1(06)
10x=1,(06)
1000x=106,(06)
1000x-10x=990x=105
x=105/990=35/330
x=0,2(375)
10x=2,(375)
10000x=2375,(375)
10000x-10x=9990x=2373
x=2373/9990=791/3330
x=0,72(5)
100x=72,(5)
1000x=725,(5)
1000x-100x=900x=653
x=653/900
x=0,1(06)
10x=1,(06)
1000x=106,(06)
1000x-10x=990x=105
x=105/990=35/330
x=0,2(375)
10x=2,(375)
10000x=2375,(375)
10000x-10x=9990x=2373
x=2373/9990=791/3330
x=0,72(5)
100x=72,(5)
1000x=725,(5)
1000x-100x=900x=653
x=653/900