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(1•2•3•4)-(20-2)•5-20-3+7•4+6•3+6•5-10•2=

Răspuns :

Răspuns:

=24-18*5-20-3+28+18+30-20

=24-90-20-3+28+18+30-20

=-66-20-3+28+18+30-20

=-86-3+28+18+30-20

=-89+28+18+30-20

=-61+18+30-20

=-43+30-20

=-13-20

=-33

Răspuns:

24-(18*5)-17+28+18+30-20=

24-90-17+56=

-49+56=7