Răspuns:
a)1+2-(-3-4)+5+6-(-7)-(-8)•(+9)=
=3-(-7)+11+7+72
10+11+7+72=28+72=100
b)1+(-2)•(-3)-(-4)•5-6+7-8•(-9)=
=1+6+20-13+72=112
c)1-2•(-3)+4+5-(-67)+8+9=
=1-6+9+67+8+9=-7+76+17=83+17=100
nu le intelegi deloc?
