Răspunsuri

Cel mai inteligent răspuns!
2014-10-30T17:34:53+02:00
Notam nt cautat cu A
(900-A)+30-100=230
(900-A)+30=230+100
(900-A)+30=330
900-A=330-30
900-A=300...deci A=600
2014-10-30T17:36:07+02:00
230+100-30+900=? Sper can ti-am fost de ajutor