Bianca1310B Bianca1310B 01-04-2017 Matematică a fost răspuns DAU 40 de Puncte!DAU COROANA! Aflati numarul necunoscut! a)935-a+72x12=1500 b)(320+a)x3x5=7500 c)170-(18+2xa):5=10 d)[(a:2+59):9+71]:20=5 e)[2+bx(40-4x5)+13]x10=550 f)[25x(9xb-11)-130]x10-325=125 g)[(bx14-784:14):(53-144:6)]x100=1000 h)(64:8+10x6+b):[72:4-(6x10-53)]=7 i)4000+[724+(750-25):25+15x5]:b-2025=2251