Răspuns:
a.(217-123)-35=
94-35=59
b){5017-[4017-(1004-4)]}-2=
[5017-(4017-1000)]-2=
(5017-3017)-2=
2000-2=1998
c)217-(123-35)=
217-88=129
d)13574-{[2478-(786-678)]-12}=
13574-[(2478-108)-12]=
13574-(2370-12)=
13574-2358=11216
e)(435-135)-(237-207)=
300-30=270
f)10000-(873-373)-(777-222-333)=
10000-500-222=
9500-222=9278
sper că te-am ajutat!