Răspunsuri

2014-03-14T15:42:09+02:00
A+b+c=399
a-x=89=>a=x+89
b-x=162=>b=x+162
c-x=115=>c=x+115
3x+366=399
3x=33=>x=11
a=11+89=100
b=11+162=173
c=11+115=126
5 5 5
2014-03-14T15:43:41+02:00
89-9=80
162-9=153
115-9=116

80+153+116=399

se foloseste metoda figurativa... cea cu segmente
scuze, dar imi pare rau sa te anunt ca 80+153+116=349