👤

Calculati:
3,2(2)+1,(3)
b) 1,(1)+2,(5)
c)1,3(2)-1,2(3)
d)8,(76)-8,(36)


Răspuns :

a)3,2(2)+1,(3)=
=(322-32)/90+(13-1)/9=
=290/90+12/9=
=29/9+12/9=
=41/9=4,(5)

b) 1,(1)+2,(5)=
=(11-1)/9+(25-2)/9=
=10/9+23/9=
=33/9=11/3

c)1,3(2)-1,2(3)=
=(132-13)/90-(123-12)/90=
=119/90-111/90=
=8/90=4/45=0,0(8)

d)8,(76)-8,(36)=
=(876-8)/99-(836-8)/99=
=868/99-828/99=
=40/99=0,(40)