400+[2×(222×2-33×3)-270÷3]=

Răspuns :

400+(2x345-90)=
=400+600=
=1000
400+[2x(222x2-33x3)-270:3]=
=400+[2x(444-99)-270:3]=
=400+(2x345-270:3)=
=400+(690-90)=
=400+600=
=1000