Răspunsuri

2014-11-05T14:59:03+02:00
A+b+c=643
a+b=417
b+c=395
417+c=643
c=643-417
c=226
b+226=395
b=395-226
b=169
a+169=417
a=417-169
a=248
2014-11-05T15:01:51+02:00
A+b+c=643,a+b=417,b+c=395
417+c=643
c=226
a+395=643
a=248
248+b=417
b=169
248+169+226=643