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{[(45-6+7*44+5)*89]-66-43+33+45*55}

Răspuns :

={[(31 +308+5)*89] -66-43+33+2475} = [(344*89)-66-43+33+2475] =(30616-66-43+33+2475)=30550-43+33+2475=30507+33+2475=30540+2475 =33015