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140-[(24:x+12*13):4+353]:3-6=3

Răspuns :

140-[(24:x+12*13):4+353]:3-6=3 . 140-[(24:x+156):4+353]:3=3+6=9 . 140-(24:x:3+156:4+353):3=9 . (8:x+39+353):3=140-9= 131 . 8:x +392=131*3=393 . 8:x= 393-392=1 . x=8:1 . x= 8 . Sper ca ti-am fost de ajutor :* .