a)1+2-(-3-4)+5+6-(-7)-(-8)·(+9)=
1+2+3+4+5+6+7+8+9=
46
b)1+(-2)·(-3)-(-4)·5-6+7-8·(-9)=
1-2·(-12)·5-6+7+72=
1+24·5+73=
74+120=
194
c)1-2·(-3)+4+5-(-67)+8+9=
1+15+67+17=
83+17=
100
d)-1·(-2)+34-(-56)-(-7+8-9)=
2+34+56+7-8+9=
92+100=
192
i)123+4-5+67-89=
127-27=
100
Sper ca te-am ajutat! :)
