Răspuns :
a+b+c = 890
a+b = 430
b+c = 565
430 + c = 890 => c = 890-430 => c = 460
b = 565-460 = > b = 105
a=430-b = 430-105 => a = 325
a+b+c = 325+105+460 = 890
a+b+c = 890
a+b = 430
b+c = 565
430 + c = 890 => c = 890-430 => c = 460
b = 565-460 = > b = 105
a=430-b = 430-105 => a = 325
a+b+c = 325+105+460 = 890