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efectuati: {[(80-6*7)*3+6]*2-100}*2+50

Răspuns :

{[(80-42)•3+6]•2-100}•2+50= [(38•3+6)•2-100]•2+50= [(114+6)•2-100]•2+50= (120•2-100)•2+50= (240-100)•2+50= 140•2+50= 280+50=330. •=inmultit cu