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TERMEN NECUNOSCUT:
9000-[(147X15+98X63)-1344:56]=


Răspuns :

9000-[8379-24]=645........
9000-[(147·15+98·63)-1344:56]=
9000-[(2205+6174)-24]=
9000-(8379-24)=
9000-8355= 645

/robèrtinni