1,1(6)=(116-11)/90=105/90 simplificam=35/30=7/6
1intreg1/4=(1·4+1)/4=5/4
0,(6)=6/9 simplif.=2/3
2intreg1/4=(2·4+1)/4=9/4
0,5=5/10 simplif.=2/5
7/6-[(2/5-5/4)-(2/3-9/4)]=
7/6-[(8-20)/4-(8-27)/4]=
7/6-(-12)/4-(-19)/4=
7/6+12/4+19/4=
7/6+31/4=
28/24+186/24=214/24 simplif.=107/12=8,91(6)
